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Finding the Third Proportional to 28.48 and 43.66

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Solution

The third proportional to 28.48 and 43.66 is: 66.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.48 : 43.66 = 43.66 : x
  2. Step 2: Convert to fraction form
    28.48/43.66 = 43.66/x
  3. Step 3: Cross multiply
    28.48x = 43.66 × 43.66
  4. Step 4: Simplify right side
    28.48x = 1,906.55
  5. Step 5: Solve for x
    x = 1,906.55/28.48
  6. Step 6: Final answer
    x = 66.95

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.