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Finding the Third Proportional to 7.24 and 16.66

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Solution

The third proportional to 7.24 and 16.66 is: 38.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.24 : 16.66 = 16.66 : x
  2. Step 2: Convert to fraction form
    7.24/16.66 = 16.66/x
  3. Step 3: Cross multiply
    7.24x = 16.66 × 16.66
  4. Step 4: Simplify right side
    7.24x = 277.69
  5. Step 5: Solve for x
    x = 277.69/7.24
  6. Step 6: Final answer
    x = 38.34

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.