Question 968024
Let the shortest side be x.
The longest side is (7+4x).
The other side is (4x-7).
We have (4x+7)^2=(4x-7)^2+x^2
16x^2+56x+49=16x^2-56x+49+x^2
x^2=112x
x=112.
The shortest side is 112.
The longest side is 455.
The other side is 441.