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Finding the Third Proportional to 18.13 and 39.27

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Solution

The third proportional to 18.13 and 39.27 is: 85.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.13 : 39.27 = 39.27 : x
  2. Step 2: Convert to fraction form
    18.13/39.27 = 39.27/x
  3. Step 3: Cross multiply
    18.13x = 39.27 × 39.27
  4. Step 4: Simplify right side
    18.13x = 1,542.10
  5. Step 5: Solve for x
    x = 1,542.10/18.13
  6. Step 6: Final answer
    x = 85.05

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.