Finding the Fourth Proportional to 382.22, 572.99 and 138.70
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Solution
The fourth proportional to 382.22, 572.99 and 138.70 is: 207.92
Step by Step Solution
- Step 1: Write the proportion equation
382.22 : 572.99 = 138.70 : x - Step 2: Convert to fraction form
382.22/572.99 = 138.70/x - Step 3: Cross multiply
382.22x = 572.99 × 138.70 - Step 4: Simplify right side
382.22x = 79,470.15 - Step 5: Solve for x
x = 79,470.15/382.22 - Step 6: Final answer
x = 207.92
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.