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Finding the Fourth Proportional to 610.86, 915.33 and 472.38

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Solution

The fourth proportional to 610.86, 915.33 and 472.38 is: 707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.86 : 915.33 = 472.38 : x
  2. Step 2: Convert to fraction form
    610.86/915.33 = 472.38/x
  3. Step 3: Cross multiply
    610.86x = 915.33 × 472.38
  4. Step 4: Simplify right side
    610.86x = 432,383.59
  5. Step 5: Solve for x
    x = 432,383.59/610.86
  6. Step 6: Final answer
    x = 707.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.