Finding the Fourth Proportional to 157.23, 217.08 and 99
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Solution
The fourth proportional to 157.23, 217.08 and 99 is: 136.68
Step by Step Solution
- Step 1: Write the proportion equation
157.23 : 217.08 = 99 : x - Step 2: Convert to fraction form
157.23/217.08 = 99/x - Step 3: Cross multiply
157.23x = 217.08 × 99 - Step 4: Simplify right side
157.23x = 21,490.92 - Step 5: Solve for x
x = 21,490.92/157.23 - Step 6: Final answer
x = 136.68
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.