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Finding the Third Proportional to 11.13 and 15.03

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Solution

The third proportional to 11.13 and 15.03 is: 20.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.13 : 15.03 = 15.03 : x
  2. Step 2: Convert to fraction form
    11.13/15.03 = 15.03/x
  3. Step 3: Cross multiply
    11.13x = 15.03 × 15.03
  4. Step 4: Simplify right side
    11.13x = 225.94
  5. Step 5: Solve for x
    x = 225.94/11.13
  6. Step 6: Final answer
    x = 20.31

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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.