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Finding the Third Proportional to 100.13 and 135.28

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Solution

The third proportional to 100.13 and 135.28 is: 182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.13 : 135.28 = 135.28 : x
  2. Step 2: Convert to fraction form
    100.13/135.28 = 135.28/x
  3. Step 3: Cross multiply
    100.13x = 135.28 × 135.28
  4. Step 4: Simplify right side
    100.13x = 18,301.02
  5. Step 5: Solve for x
    x = 18,301.02/100.13
  6. Step 6: Final answer
    x = 182.78

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.