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Finding the Third Proportional to 28.38 and 61.63

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Solution

The third proportional to 28.38 and 61.63 is: 133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.38 : 61.63 = 61.63 : x
  2. Step 2: Convert to fraction form
    28.38/61.63 = 61.63/x
  3. Step 3: Cross multiply
    28.38x = 61.63 × 61.63
  4. Step 4: Simplify right side
    28.38x = 3,797.64
  5. Step 5: Solve for x
    x = 3,797.64/28.38
  6. Step 6: Final answer
    x = 133.84

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.