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Finding the Third Proportional to 209.25 and 449.72

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Solution

The third proportional to 209.25 and 449.72 is: 966.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.25 : 449.72 = 449.72 : x
  2. Step 2: Convert to fraction form
    209.25/449.72 = 449.72/x
  3. Step 3: Cross multiply
    209.25x = 449.72 × 449.72
  4. Step 4: Simplify right side
    209.25x = 202,246.95
  5. Step 5: Solve for x
    x = 202,246.95/209.25
  6. Step 6: Final answer
    x = 966.53

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.