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Finding the Third Proportional to 11.22 and 20.83

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Solution

The third proportional to 11.22 and 20.83 is: 38.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.22 : 20.83 = 20.83 : x
  2. Step 2: Convert to fraction form
    11.22/20.83 = 20.83/x
  3. Step 3: Cross multiply
    11.22x = 20.83 × 20.83
  4. Step 4: Simplify right side
    11.22x = 433.88
  5. Step 5: Solve for x
    x = 433.88/11.22
  6. Step 6: Final answer
    x = 38.65

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.