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Finding the Fourth Proportional to 376.76, 565.14 and 133.28

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Solution

The fourth proportional to 376.76, 565.14 and 133.28 is: 199.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.76 : 565.14 = 133.28 : x
  2. Step 2: Convert to fraction form
    376.76/565.14 = 133.28/x
  3. Step 3: Cross multiply
    376.76x = 565.14 × 133.28
  4. Step 4: Simplify right side
    376.76x = 75,321.86
  5. Step 5: Solve for x
    x = 75,321.86/376.76
  6. Step 6: Final answer
    x = 199.92

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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.