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Finding the Fourth Proportional to 83.59, 125.39 and 22.72

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Solution

The fourth proportional to 83.59, 125.39 and 22.72 is: 34.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.59 : 125.39 = 22.72 : x
  2. Step 2: Convert to fraction form
    83.59/125.39 = 22.72/x
  3. Step 3: Cross multiply
    83.59x = 125.39 × 22.72
  4. Step 4: Simplify right side
    83.59x = 2,849.44
  5. Step 5: Solve for x
    x = 2,849.44/83.59
  6. Step 6: Final answer
    x = 34.09

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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.