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Finding the Fourth Proportional to 950.46, 1,425.72 and 517.92

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Solution

The fourth proportional to 950.46, 1,425.72 and 517.92 is: 776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.46 : 1,425.72 = 517.92 : x
  2. Step 2: Convert to fraction form
    950.46/1,425.72 = 517.92/x
  3. Step 3: Cross multiply
    950.46x = 1,425.72 × 517.92
  4. Step 4: Simplify right side
    950.46x = 738,408.90
  5. Step 5: Solve for x
    x = 738,408.90/950.46
  6. Step 6: Final answer
    x = 776.90

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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.