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Finding the Third Proportional to 20.06 and 41.94

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Solution

The third proportional to 20.06 and 41.94 is: 87.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.06 : 41.94 = 41.94 : x
  2. Step 2: Convert to fraction form
    20.06/41.94 = 41.94/x
  3. Step 3: Cross multiply
    20.06x = 41.94 × 41.94
  4. Step 4: Simplify right side
    20.06x = 1,758.75
  5. Step 5: Solve for x
    x = 1,758.75/20.06
  6. Step 6: Final answer
    x = 87.66

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.