To calculate the ideal waist size:
\[ IDW = H \cdot 0.45 + F \]
Where:
Ideal waist size is defined as the ideal circumference of your waist based on your height to be considered healthy.
Let's assume the following values:
Using the formula:
\[ IDW = 170 \cdot 0.45 + 0 = 76.5 \]
The ideal waist size is 76.5 cm.