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Finding the Fourth Proportional to 379.28, 568.92 and 132.49

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Solution

The fourth proportional to 379.28, 568.92 and 132.49 is: 198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.28 : 568.92 = 132.49 : x
  2. Step 2: Convert to fraction form
    379.28/568.92 = 132.49/x
  3. Step 3: Cross multiply
    379.28x = 568.92 × 132.49
  4. Step 4: Simplify right side
    379.28x = 75,373.37
  5. Step 5: Solve for x
    x = 75,373.37/379.28
  6. Step 6: Final answer
    x = 198.73

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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.