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Finding the Fourth Proportional to 376.57, 565.05 and 133.12

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Solution

The fourth proportional to 376.57, 565.05 and 133.12 is: 199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.57 : 565.05 = 133.12 : x
  2. Step 2: Convert to fraction form
    376.57/565.05 = 133.12/x
  3. Step 3: Cross multiply
    376.57x = 565.05 × 133.12
  4. Step 4: Simplify right side
    376.57x = 75,218.70
  5. Step 5: Solve for x
    x = 75,218.70/376.57
  6. Step 6: Final answer
    x = 199.74

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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.