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Finding the Third Proportional to 11.87 and 16.59

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Solution

The third proportional to 11.87 and 16.59 is: 23.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.87 : 16.59 = 16.59 : x
  2. Step 2: Convert to fraction form
    11.87/16.59 = 16.59/x
  3. Step 3: Cross multiply
    11.87x = 16.59 × 16.59
  4. Step 4: Simplify right side
    11.87x = 275.29
  5. Step 5: Solve for x
    x = 275.29/11.87
  6. Step 6: Final answer
    x = 23.19

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.