is 25 to 16 proportional to 5 to 4
No, because you can't simplify 25:16.Another way to figure out why it is not proportional is to divide.16 / 25 = 0.644/5 = 0.60.64 and 0.6 are not equal.Hope this helps!
25/16=1.56255/4=1.25They are not proportionally equivalent.