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Finding the Third Proportional to 208.75 and 502.19

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Solution

The third proportional to 208.75 and 502.19 is: 1,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.75 : 502.19 = 502.19 : x
  2. Step 2: Convert to fraction form
    208.75/502.19 = 502.19/x
  3. Step 3: Cross multiply
    208.75x = 502.19 × 502.19
  4. Step 4: Simplify right side
    208.75x = 252,192.29
  5. Step 5: Solve for x
    x = 252,192.29/208.75
  6. Step 6: Final answer
    x = 1,208.11

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.