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Finding the Third Proportional to 8.71 and 18.55

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Solution

The third proportional to 8.71 and 18.55 is: 39.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.71 : 18.55 = 18.55 : x
  2. Step 2: Convert to fraction form
    8.71/18.55 = 18.55/x
  3. Step 3: Cross multiply
    8.71x = 18.55 × 18.55
  4. Step 4: Simplify right side
    8.71x = 343.95
  5. Step 5: Solve for x
    x = 343.95/8.71
  6. Step 6: Final answer
    x = 39.49

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.