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Finding the Third Proportional to 249 and 378.38

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Solution

The third proportional to 249 and 378.38 is: 574.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    249 : 378.38 = 378.38 : x
  2. Step 2: Convert to fraction form
    249/378.38 = 378.38/x
  3. Step 3: Cross multiply
    249x = 378.38 × 378.38
  4. Step 4: Simplify right side
    249x = 143,167.64
  5. Step 5: Solve for x
    x = 143,167.64/249
  6. Step 6: Final answer
    x = 574.97

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.