Polarity of Acetic Acid, Ethanol and 1-Propanol

In order to compare acetic acid, ethanol and 1-propanol in terms of solubility in hexane, I would like to order them in terms of (a)polarity.


By looking up the dipole moments, I found that these molecules can be ordered in terms of increasing polarity like this.


1-Propanol (1.68D) < Ethanol (1.69D) < Acetic acid (1.74D)


Without looking up the values for the dipole moments, how can I predict which one of these molecules will be the most/least polar?


