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Finding the Fourth Proportional to 83.13, 114.68 and 50.39

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Solution

The fourth proportional to 83.13, 114.68 and 50.39 is: 69.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.13 : 114.68 = 50.39 : x
  2. Step 2: Convert to fraction form
    83.13/114.68 = 50.39/x
  3. Step 3: Cross multiply
    83.13x = 114.68 × 50.39
  4. Step 4: Simplify right side
    83.13x = 5,778.71
  5. Step 5: Solve for x
    x = 5,778.71/83.13
  6. Step 6: Final answer
    x = 69.52

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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.