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Finding the Third Proportional to 359.75 and 396.75

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Solution

The third proportional to 359.75 and 396.75 is: 437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.75 : 396.75 = 396.75 : x
  2. Step 2: Convert to fraction form
    359.75/396.75 = 396.75/x
  3. Step 3: Cross multiply
    359.75x = 396.75 × 396.75
  4. Step 4: Simplify right side
    359.75x = 157,410.56
  5. Step 5: Solve for x
    x = 157,410.56/359.75
  6. Step 6: Final answer
    x = 437.56

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.