Question 1065303
ratio of the sides are the same, therefore:


A/B = B/C


replace A with 5 and C with 45 and you get:


5/B = B/45


cross multiply to get B^2 = 5*45


simplify to get B^2 = 225


take the square root of both sides of the equation to get B = sqrt(225).


simplify to get B = 15.


the base of A is 5.
the base of B is 15.
the Base of C is 45


the ratio of A to B is 5/15 = 1/3.


the ratio of B to C is 15/45 = 1/3.


the ratios are the same.


your solution is that the base of triangle B = 15.