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Finding the Third Proportional to 3.92 and 8.04

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Solution

The third proportional to 3.92 and 8.04 is: 16.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.92 : 8.04 = 8.04 : x
  2. Step 2: Convert to fraction form
    3.92/8.04 = 8.04/x
  3. Step 3: Cross multiply
    3.92x = 8.04 × 8.04
  4. Step 4: Simplify right side
    3.92x = 64.64
  5. Step 5: Solve for x
    x = 64.64/3.92
  6. Step 6: Final answer
    x = 16.50

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.