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Finding the Third Proportional to 18.80 and 41.17

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Solution

The third proportional to 18.80 and 41.17 is: 90.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.80 : 41.17 = 41.17 : x
  2. Step 2: Convert to fraction form
    18.80/41.17 = 41.17/x
  3. Step 3: Cross multiply
    18.80x = 41.17 × 41.17
  4. Step 4: Simplify right side
    18.80x = 1,695.16
  5. Step 5: Solve for x
    x = 1,695.16/18.80
  6. Step 6: Final answer
    x = 90.15

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.