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Finding the Fourth Proportional to 83.34, 115.07 and 54.29

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Solution

The fourth proportional to 83.34, 115.07 and 54.29 is: 74.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.34 : 115.07 = 54.29 : x
  2. Step 2: Convert to fraction form
    83.34/115.07 = 54.29/x
  3. Step 3: Cross multiply
    83.34x = 115.07 × 54.29
  4. Step 4: Simplify right side
    83.34x = 6,246.30
  5. Step 5: Solve for x
    x = 6,246.30/83.34
  6. Step 6: Final answer
    x = 74.95

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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.