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Finding the Fourth Proportional to 950.91, 1,425.35 and 488.20

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Solution

The fourth proportional to 950.91, 1,425.35 and 488.20 is: 731.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.91 : 1,425.35 = 488.20 : x
  2. Step 2: Convert to fraction form
    950.91/1,425.35 = 488.20/x
  3. Step 3: Cross multiply
    950.91x = 1,425.35 × 488.20
  4. Step 4: Simplify right side
    950.91x = 695,855.87
  5. Step 5: Solve for x
    x = 695,855.87/950.91
  6. Step 6: Final answer
    x = 731.78

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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.