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Finding the Third Proportional to 112.13 and 169.88

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Solution

The third proportional to 112.13 and 169.88 is: 257.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.13 : 169.88 = 169.88 : x
  2. Step 2: Convert to fraction form
    112.13/169.88 = 169.88/x
  3. Step 3: Cross multiply
    112.13x = 169.88 × 169.88
  4. Step 4: Simplify right side
    112.13x = 28,857.52
  5. Step 5: Solve for x
    x = 28,857.52/112.13
  6. Step 6: Final answer
    x = 257.37

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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.