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Finding the Fourth Proportional to 83.42, 115.07 and 60.11

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Solution

The fourth proportional to 83.42, 115.07 and 60.11 is: 82.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.42 : 115.07 = 60.11 : x
  2. Step 2: Convert to fraction form
    83.42/115.07 = 60.11/x
  3. Step 3: Cross multiply
    83.42x = 115.07 × 60.11
  4. Step 4: Simplify right side
    83.42x = 6,915.98
  5. Step 5: Solve for x
    x = 6,915.98/83.42
  6. Step 6: Final answer
    x = 82.91

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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.