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Finding the Fourth Proportional to 133.96, 200.87 and 52.78

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Solution

The fourth proportional to 133.96, 200.87 and 52.78 is: 79.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.96 : 200.87 = 52.78 : x
  2. Step 2: Convert to fraction form
    133.96/200.87 = 52.78/x
  3. Step 3: Cross multiply
    133.96x = 200.87 × 52.78
  4. Step 4: Simplify right side
    133.96x = 10,600.91
  5. Step 5: Solve for x
    x = 10,600.91/133.96
  6. Step 6: Final answer
    x = 79.14

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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.