An artist wants her painting to be in the shape of a Golden rectangle. If the length of the painting is 36 inches, then what should be the width?
Are you familiar with the Golden Ratio?.
There is lots if one does a google search.
The ratio is length to width of $\displaystyle \frac{\sqrt{5}+1}{2}:1$
This is an interesting thing to investigate. Do a search.
It is also related to the Fibonacci numbers.
That is $\displaystyle \lim_{n\to \infty}\frac{f_{n+1}}{f_{n}}=\text{golden ratio}$