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Finding the Fourth Proportional to 377.09, 565.61 and 133.61

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Solution

The fourth proportional to 377.09, 565.61 and 133.61 is: 200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.09 : 565.61 = 133.61 : x
  2. Step 2: Convert to fraction form
    377.09/565.61 = 133.61/x
  3. Step 3: Cross multiply
    377.09x = 565.61 × 133.61
  4. Step 4: Simplify right side
    377.09x = 75,567.66
  5. Step 5: Solve for x
    x = 75,567.66/377.09
  6. Step 6: Final answer
    x = 200.40

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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.