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Finding the Fourth Proportional to 415.30, 572.88 and 240.62

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Solution

The fourth proportional to 415.30, 572.88 and 240.62 is: 331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.30 : 572.88 = 240.62 : x
  2. Step 2: Convert to fraction form
    415.30/572.88 = 240.62/x
  3. Step 3: Cross multiply
    415.30x = 572.88 × 240.62
  4. Step 4: Simplify right side
    415.30x = 137,846.39
  5. Step 5: Solve for x
    x = 137,846.39/415.30
  6. Step 6: Final answer
    x = 331.92

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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.