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Finding the Third Proportional to 12.48 and 26.79

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Solution

The third proportional to 12.48 and 26.79 is: 57.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.48 : 26.79 = 26.79 : x
  2. Step 2: Convert to fraction form
    12.48/26.79 = 26.79/x
  3. Step 3: Cross multiply
    12.48x = 26.79 × 26.79
  4. Step 4: Simplify right side
    12.48x = 717.65
  5. Step 5: Solve for x
    x = 717.65/12.48
  6. Step 6: Final answer
    x = 57.50

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.