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Finding the Third Proportional to 117.38 and 247.88

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Solution

The third proportional to 117.38 and 247.88 is: 523.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.38 : 247.88 = 247.88 : x
  2. Step 2: Convert to fraction form
    117.38/247.88 = 247.88/x
  3. Step 3: Cross multiply
    117.38x = 247.88 × 247.88
  4. Step 4: Simplify right side
    117.38x = 61,442.02
  5. Step 5: Solve for x
    x = 61,442.02/117.38
  6. Step 6: Final answer
    x = 523.47

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.