I need to verify the following, and cant seem to figure it out:

If a,b >0 and b/a satisfies the proportion b/a=(a+b)/b, then $\displaystyle \frac{b}{a}\equiv r=\frac{1+\sqrt{5}}{2}$.

If c,d >0 and c/d satisfies the proportion d/c=c/(c+d), then $\displaystyle \frac{d}{c}\equiv r=\frac{\sqrt{5}-1}{2}$.

Cant seem to get anywhere with these