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Finding the Fourth Proportional to 62.13, 85.68 and 52.92

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Solution

The fourth proportional to 62.13, 85.68 and 52.92 is: 72.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.13 : 85.68 = 52.92 : x
  2. Step 2: Convert to fraction form
    62.13/85.68 = 52.92/x
  3. Step 3: Cross multiply
    62.13x = 85.68 × 52.92
  4. Step 4: Simplify right side
    62.13x = 4,534.19
  5. Step 5: Solve for x
    x = 4,534.19/62.13
  6. Step 6: Final answer
    x = 72.98

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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.