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Finding the Third Proportional to 359.75 and 772.75

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Solution

The third proportional to 359.75 and 772.75 is: 1,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.75 : 772.75 = 772.75 : x
  2. Step 2: Convert to fraction form
    359.75/772.75 = 772.75/x
  3. Step 3: Cross multiply
    359.75x = 772.75 × 772.75
  4. Step 4: Simplify right side
    359.75x = 597,142.56
  5. Step 5: Solve for x
    x = 597,142.56/359.75
  6. Step 6: Final answer
    x = 1,659.88

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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.