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Finding the Fourth Proportional to 415.17, 572.85 and 240.48

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Solution

The fourth proportional to 415.17, 572.85 and 240.48 is: 331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.17 : 572.85 = 240.48 : x
  2. Step 2: Convert to fraction form
    415.17/572.85 = 240.48/x
  3. Step 3: Cross multiply
    415.17x = 572.85 × 240.48
  4. Step 4: Simplify right side
    415.17x = 137,758.97
  5. Step 5: Solve for x
    x = 137,758.97/415.17
  6. Step 6: Final answer
    x = 331.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.