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Finding the Third Proportional to 208.75 and 449.13

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Solution

The third proportional to 208.75 and 449.13 is: 966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.75 : 449.13 = 449.13 : x
  2. Step 2: Convert to fraction form
    208.75/449.13 = 449.13/x
  3. Step 3: Cross multiply
    208.75x = 449.13 × 449.13
  4. Step 4: Simplify right side
    208.75x = 201,713.27
  5. Step 5: Solve for x
    x = 201,713.27/208.75
  6. Step 6: Final answer
    x = 966.29

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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.