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Finding the Fourth Proportional to 62.43, 86.09 and 49.29

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Solution

The fourth proportional to 62.43, 86.09 and 49.29 is: 67.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.43 : 86.09 = 49.29 : x
  2. Step 2: Convert to fraction form
    62.43/86.09 = 49.29/x
  3. Step 3: Cross multiply
    62.43x = 86.09 × 49.29
  4. Step 4: Simplify right side
    62.43x = 4,243.13
  5. Step 5: Solve for x
    x = 4,243.13/62.43
  6. Step 6: Final answer
    x = 67.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.