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Finding the Third Proportional to 8.73 and 18.79

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Solution

The third proportional to 8.73 and 18.79 is: 40.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.73 : 18.79 = 18.79 : x
  2. Step 2: Convert to fraction form
    8.73/18.79 = 18.79/x
  3. Step 3: Cross multiply
    8.73x = 18.79 × 18.79
  4. Step 4: Simplify right side
    8.73x = 352.98
  5. Step 5: Solve for x
    x = 352.98/8.73
  6. Step 6: Final answer
    x = 40.41

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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.