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Finding the Fourth Proportional to 62.91, 87.26 and 60.68

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Solution

The fourth proportional to 62.91, 87.26 and 60.68 is: 84.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.91 : 87.26 = 60.68 : x
  2. Step 2: Convert to fraction form
    62.91/87.26 = 60.68/x
  3. Step 3: Cross multiply
    62.91x = 87.26 × 60.68
  4. Step 4: Simplify right side
    62.91x = 5,294.85
  5. Step 5: Solve for x
    x = 5,294.85/62.91
  6. Step 6: Final answer
    x = 84.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.