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Finding the Fourth Proportional to 250.73, 378.11 and 249.11

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Solution

The fourth proportional to 250.73, 378.11 and 249.11 is: 375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.73 : 378.11 = 249.11 : x
  2. Step 2: Convert to fraction form
    250.73/378.11 = 249.11/x
  3. Step 3: Cross multiply
    250.73x = 378.11 × 249.11
  4. Step 4: Simplify right side
    250.73x = 94,187.85
  5. Step 5: Solve for x
    x = 94,187.85/250.73
  6. Step 6: Final answer
    x = 375.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.