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Finding the Third Proportional to 118.25 and 223

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Solution

The third proportional to 118.25 and 223 is: 420.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.25 : 223 = 223 : x
  2. Step 2: Convert to fraction form
    118.25/223 = 223/x
  3. Step 3: Cross multiply
    118.25x = 223 × 223
  4. Step 4: Simplify right side
    118.25x = 49,729
  5. Step 5: Solve for x
    x = 49,729/118.25
  6. Step 6: Final answer
    x = 420.54

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.