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Finding the Third Proportional to 28.78 and 44.02

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Solution

The third proportional to 28.78 and 44.02 is: 67.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.78 : 44.02 = 44.02 : x
  2. Step 2: Convert to fraction form
    28.78/44.02 = 44.02/x
  3. Step 3: Cross multiply
    28.78x = 44.02 × 44.02
  4. Step 4: Simplify right side
    28.78x = 1,937.38
  5. Step 5: Solve for x
    x = 1,937.38/28.78
  6. Step 6: Final answer
    x = 67.31

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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.