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Finding the Fourth Proportional to 250.78, 376.17 and 113.73

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Solution

The fourth proportional to 250.78, 376.17 and 113.73 is: 170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.78 : 376.17 = 113.73 : x
  2. Step 2: Convert to fraction form
    250.78/376.17 = 113.73/x
  3. Step 3: Cross multiply
    250.78x = 376.17 × 113.73
  4. Step 4: Simplify right side
    250.78x = 42,781.81
  5. Step 5: Solve for x
    x = 42,781.81/250.78
  6. Step 6: Final answer
    x = 170.60

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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.