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Finding the Third Proportional to 123.25 and 169

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Solution

The third proportional to 123.25 and 169 is: 231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.25 : 169 = 169 : x
  2. Step 2: Convert to fraction form
    123.25/169 = 169/x
  3. Step 3: Cross multiply
    123.25x = 169 × 169
  4. Step 4: Simplify right side
    123.25x = 28,561
  5. Step 5: Solve for x
    x = 28,561/123.25
  6. Step 6: Final answer
    x = 231.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.