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Finding the Third Proportional to 27.69 and 43.66

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Solution

The third proportional to 27.69 and 43.66 is: 68.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.69 : 43.66 = 43.66 : x
  2. Step 2: Convert to fraction form
    27.69/43.66 = 43.66/x
  3. Step 3: Cross multiply
    27.69x = 43.66 × 43.66
  4. Step 4: Simplify right side
    27.69x = 1,906.55
  5. Step 5: Solve for x
    x = 1,906.55/27.69
  6. Step 6: Final answer
    x = 68.86

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.