Finding the Fourth Proportional to 157.79, 217.68 and 125.07
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Solution
The fourth proportional to 157.79, 217.68 and 125.07 is: 172.55
Step by Step Solution
- Step 1: Write the proportion equation
157.79 : 217.68 = 125.07 : x - Step 2: Convert to fraction form
157.79/217.68 = 125.07/x - Step 3: Cross multiply
157.79x = 217.68 × 125.07 - Step 4: Simplify right side
157.79x = 27,225.24 - Step 5: Solve for x
x = 27,225.24/157.79 - Step 6: Final answer
x = 172.55
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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.