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Finding the Fourth Proportional to 61.73, 92.62 and 38.92

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Solution

The fourth proportional to 61.73, 92.62 and 38.92 is: 58.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.73 : 92.62 = 38.92 : x
  2. Step 2: Convert to fraction form
    61.73/92.62 = 38.92/x
  3. Step 3: Cross multiply
    61.73x = 92.62 × 38.92
  4. Step 4: Simplify right side
    61.73x = 3,605.00
  5. Step 5: Solve for x
    x = 3,605.00/61.73
  6. Step 6: Final answer
    x = 58.40

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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.