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Finding the Fourth Proportional to 250.55, 375.85 and 113.61

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Solution

The fourth proportional to 250.55, 375.85 and 113.61 is: 170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.55 : 375.85 = 113.61 : x
  2. Step 2: Convert to fraction form
    250.55/375.85 = 113.61/x
  3. Step 3: Cross multiply
    250.55x = 375.85 × 113.61
  4. Step 4: Simplify right side
    250.55x = 42,700.32
  5. Step 5: Solve for x
    x = 42,700.32/250.55
  6. Step 6: Final answer
    x = 170.43

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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.