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Finding the Fourth Proportional to 62.62, 93.31 and 61.54

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Solution

The fourth proportional to 62.62, 93.31 and 61.54 is: 91.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.62 : 93.31 = 61.54 : x
  2. Step 2: Convert to fraction form
    62.62/93.31 = 61.54/x
  3. Step 3: Cross multiply
    62.62x = 93.31 × 61.54
  4. Step 4: Simplify right side
    62.62x = 5,742.30
  5. Step 5: Solve for x
    x = 5,742.30/62.62
  6. Step 6: Final answer
    x = 91.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.