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Finding the Third Proportional to 8.62 and 10.15

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Solution

The third proportional to 8.62 and 10.15 is: 11.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.62 : 10.15 = 10.15 : x
  2. Step 2: Convert to fraction form
    8.62/10.15 = 10.15/x
  3. Step 3: Cross multiply
    8.62x = 10.15 × 10.15
  4. Step 4: Simplify right side
    8.62x = 102.99
  5. Step 5: Solve for x
    x = 102.99/8.62
  6. Step 6: Final answer
    x = 11.95

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.