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Finding the Fourth Proportional to 950.74, 1,425.20 and 402.17

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Solution

The fourth proportional to 950.74, 1,425.20 and 402.17 is: 602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.74 : 1,425.20 = 402.17 : x
  2. Step 2: Convert to fraction form
    950.74/1,425.20 = 402.17/x
  3. Step 3: Cross multiply
    950.74x = 1,425.20 × 402.17
  4. Step 4: Simplify right side
    950.74x = 573,163.55
  5. Step 5: Solve for x
    x = 573,163.55/950.74
  6. Step 6: Final answer
    x = 602.86

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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.