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Finding the Third Proportional to 243.38 and 518.44

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Solution

The third proportional to 243.38 and 518.44 is: 1,104.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.38 : 518.44 = 518.44 : x
  2. Step 2: Convert to fraction form
    243.38/518.44 = 518.44/x
  3. Step 3: Cross multiply
    243.38x = 518.44 × 518.44
  4. Step 4: Simplify right side
    243.38x = 268,777.44
  5. Step 5: Solve for x
    x = 268,777.44/243.38
  6. Step 6: Final answer
    x = 1,104.38

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.