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Finding the Third Proportional to 4.01 and 8.65

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Solution

The third proportional to 4.01 and 8.65 is: 18.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.01 : 8.65 = 8.65 : x
  2. Step 2: Convert to fraction form
    4.01/8.65 = 8.65/x
  3. Step 3: Cross multiply
    4.01x = 8.65 × 8.65
  4. Step 4: Simplify right side
    4.01x = 74.80
  5. Step 5: Solve for x
    x = 74.80/4.01
  6. Step 6: Final answer
    x = 18.66

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.