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Finding the Fourth Proportional to 376.68, 565.08 and 133.15

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Solution

The fourth proportional to 376.68, 565.08 and 133.15 is: 199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.68 : 565.08 = 133.15 : x
  2. Step 2: Convert to fraction form
    376.68/565.08 = 133.15/x
  3. Step 3: Cross multiply
    376.68x = 565.08 × 133.15
  4. Step 4: Simplify right side
    376.68x = 75,240.40
  5. Step 5: Solve for x
    x = 75,240.40/376.68
  6. Step 6: Final answer
    x = 199.75

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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.