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Finding the Third Proportional to 5.12 and 11.02

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Solution

The third proportional to 5.12 and 11.02 is: 23.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.12 : 11.02 = 11.02 : x
  2. Step 2: Convert to fraction form
    5.12/11.02 = 11.02/x
  3. Step 3: Cross multiply
    5.12x = 11.02 × 11.02
  4. Step 4: Simplify right side
    5.12x = 121.47
  5. Step 5: Solve for x
    x = 121.47/5.12
  6. Step 6: Final answer
    x = 23.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.