The formula to calculate the golden rectangle ratio is:
\[ \frac{a+b}{a} = \frac{a}{b} = 1.6180339 \]
Where:
A golden rectangle is defined as a rectangle whose length to width ratio is equal to the golden ratio, which is approximately 1.6180339. This ratio is often found in nature and is considered aesthetically pleasing in art and design.
Let's assume the following values:
Step 1: Calculate the ratio:
\[ \frac{10 + 6.18}{10} = 1.618 \]
The golden rectangle ratio is approximately 1.618.