What do you call such a man who is taken advantage of by the attraction of beautiful woman. This person is basically fooled by such a woman/girl.
For the sense of "fooled" the closest match I can think of is beguiled.
You could also consider captivated, entranced, or enthralled.
Unable to think or act normally, especially because of being in love. [ODO]
Note that this is not limited to either gender as made clear in the movie of the same name. Both main characters are smitten and inclined to conduct that their families consider detrimental. The mother of the female character warns her that her infatuation is leading to perdition: Your life is going down the toilet!
Surely "Men who are lured by the seductive beauty of women" are called seduced ?
Seductive, seduced, same root, entirely appropriate that one is seduced by something seductive.
But I think that OPs question sets up a false parallel between seduce and fool. A woman can seduce a man without fooling him, just as a man can fool a woman without seducing her. Being seduced and being taken advantage of are not the same
The Lord Chancellor in Gilbert & Sullivan’s Iolanthe confesses to and complains of this particular weakness of character, in his self-introductory entrance number, by terming himself “a susceptible Chancellor”—with progessively stronger intensifiers each verse. This corresponds to OED sense 2.a. (s.v. susceptible):
Capable of being affected by, or easily moved to, feeling; subject to emotional (or mental) impression; impressionable.
That definition is not at all specific to sexual attraction to pretty young women, of course, but the context makes clear that that is what it is about. You can do that through context as well. That approach, in general, is how the huge but finite vocabulary of the English language can be made to cover a far larger array of possible meanings.
I would suggest human.
Emotional and physiological effects occur so to disable the defences of cold logic. A man becomes “vulnerable” to a woman’s agenda, such as fertilisation, protection, supporting a family, or suchlike. This is irrespective of whether the woman knowingly or instinctively intends such.
A man’s instincts are buried deep within parts of the brain that bypass or override the conscious lobes. This is effectively animal instinct: survival and reproduction.
Incidentally, the woman does not have to “beautiful”, just one who causes the physiological and emotional reactions. These will vary in a man over time and experience.
The answer again is human.
Maybe a simple term would be exploited if the fulcrum of the issue is the advantage gained or taken by the woman, whether intentionally or otherwise, through the sexual or other attraction effects upon the man.