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Finding the Fourth Proportional to 952.75, 1,429.67 and 439.75

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Solution

The fourth proportional to 952.75, 1,429.67 and 439.75 is: 659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.75 : 1,429.67 = 439.75 : x
  2. Step 2: Convert to fraction form
    952.75/1,429.67 = 439.75/x
  3. Step 3: Cross multiply
    952.75x = 1,429.67 × 439.75
  4. Step 4: Simplify right side
    952.75x = 628,697.38
  5. Step 5: Solve for x
    x = 628,697.38/952.75
  6. Step 6: Final answer
    x = 659.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.