Finding the Fourth Proportional to 381.99, 572.99 and 135.14
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Solution
The fourth proportional to 381.99, 572.99 and 135.14 is: 202.71
Step by Step Solution
- Step 1: Write the proportion equation
381.99 : 572.99 = 135.14 : x - Step 2: Convert to fraction form
381.99/572.99 = 135.14/x - Step 3: Cross multiply
381.99x = 572.99 × 135.14 - Step 4: Simplify right side
381.99x = 77,433.87 - Step 5: Solve for x
x = 77,433.87/381.99 - Step 6: Final answer
x = 202.71
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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.