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Finding the Fourth Proportional to 269.28, 401.96 and 249.22

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Solution

The fourth proportional to 269.28, 401.96 and 249.22 is: 372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.28 : 401.96 = 249.22 : x
  2. Step 2: Convert to fraction form
    269.28/401.96 = 249.22/x
  3. Step 3: Cross multiply
    269.28x = 401.96 × 249.22
  4. Step 4: Simplify right side
    269.28x = 100,176.47
  5. Step 5: Solve for x
    x = 100,176.47/269.28
  6. Step 6: Final answer
    x = 372.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.