X : 7:15 = 15/23

To solve the proportion \( \frac{x}{7.15} = \frac{15}{23} \), we can use cross-multiplication. Cross-multiply to get: \[ x \cdot 23 = 7.15 \cdot 15 \] Now calculate \( 7.15 \cdot 15 \): \[ 7.15 \cdot 15 = 107.25 \] This gives us: \[ 23x = 107.25 \] Now, solve for \( x \) by dividing both sides by 23: \[ x = \frac{107.25}{23} \] Now, calculate \( \frac{107.25}{23} \): \[ x \approx 4.66 \] So, \( x \approx 4.66 \).