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Finding the Third Proportional to 209.50 and 563.38

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Solution

The third proportional to 209.50 and 563.38 is: 1,514.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.50 : 563.38 = 563.38 : x
  2. Step 2: Convert to fraction form
    209.50/563.38 = 563.38/x
  3. Step 3: Cross multiply
    209.50x = 563.38 × 563.38
  4. Step 4: Simplify right side
    209.50x = 317,391.39
  5. Step 5: Solve for x
    x = 317,391.39/209.50
  6. Step 6: Final answer
    x = 1,514.99

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.