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Finding the Third Proportional to 325.69 and 636.19

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Solution

The third proportional to 325.69 and 636.19 is: 1,242.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.69 : 636.19 = 636.19 : x
  2. Step 2: Convert to fraction form
    325.69/636.19 = 636.19/x
  3. Step 3: Cross multiply
    325.69x = 636.19 × 636.19
  4. Step 4: Simplify right side
    325.69x = 404,734.54
  5. Step 5: Solve for x
    x = 404,734.54/325.69
  6. Step 6: Final answer
    x = 1,242.71

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.