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Finding the Third Proportional to 8.17 and 12.37

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Solution

The third proportional to 8.17 and 12.37 is: 18.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.17 : 12.37 = 12.37 : x
  2. Step 2: Convert to fraction form
    8.17/12.37 = 12.37/x
  3. Step 3: Cross multiply
    8.17x = 12.37 × 12.37
  4. Step 4: Simplify right side
    8.17x = 153.05
  5. Step 5: Solve for x
    x = 153.05/8.17
  6. Step 6: Final answer
    x = 18.74

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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.