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Finding the Fourth Proportional to 83.54, 125.38 and 37.98

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Solution

The fourth proportional to 83.54, 125.38 and 37.98 is: 57.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.54 : 125.38 = 37.98 : x
  2. Step 2: Convert to fraction form
    83.54/125.38 = 37.98/x
  3. Step 3: Cross multiply
    83.54x = 125.38 × 37.98
  4. Step 4: Simplify right side
    83.54x = 4,761.93
  5. Step 5: Solve for x
    x = 4,761.93/83.54
  6. Step 6: Final answer
    x = 57.00

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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.