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Finding the Third Proportional to 169.31 and 252.75

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Solution

The third proportional to 169.31 and 252.75 is: 377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.31 : 252.75 = 252.75 : x
  2. Step 2: Convert to fraction form
    169.31/252.75 = 252.75/x
  3. Step 3: Cross multiply
    169.31x = 252.75 × 252.75
  4. Step 4: Simplify right side
    169.31x = 63,882.56
  5. Step 5: Solve for x
    x = 63,882.56/169.31
  6. Step 6: Final answer
    x = 377.31

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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.