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Finding the Fourth Proportional to 62.73, 86.04 and 61.55

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Solution

The fourth proportional to 62.73, 86.04 and 61.55 is: 84.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.73 : 86.04 = 61.55 : x
  2. Step 2: Convert to fraction form
    62.73/86.04 = 61.55/x
  3. Step 3: Cross multiply
    62.73x = 86.04 × 61.55
  4. Step 4: Simplify right side
    62.73x = 5,295.92
  5. Step 5: Solve for x
    x = 5,295.92/62.73
  6. Step 6: Final answer
    x = 84.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.