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Finding the Fourth Proportional to 62.57, 93.72 and 39.71

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Solution

The fourth proportional to 62.57, 93.72 and 39.71 is: 59.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.57 : 93.72 = 39.71 : x
  2. Step 2: Convert to fraction form
    62.57/93.72 = 39.71/x
  3. Step 3: Cross multiply
    62.57x = 93.72 × 39.71
  4. Step 4: Simplify right side
    62.57x = 3,721.48
  5. Step 5: Solve for x
    x = 3,721.48/62.57
  6. Step 6: Final answer
    x = 59.47

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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.