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Finding the Third Proportional to 124.25 and 272.75

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Solution

The third proportional to 124.25 and 272.75 is: 598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.25 : 272.75 = 272.75 : x
  2. Step 2: Convert to fraction form
    124.25/272.75 = 272.75/x
  3. Step 3: Cross multiply
    124.25x = 272.75 × 272.75
  4. Step 4: Simplify right side
    124.25x = 74,392.56
  5. Step 5: Solve for x
    x = 74,392.56/124.25
  6. Step 6: Final answer
    x = 598.73

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.