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Finding the Fourth Proportional to 950.52, 1,424.33 and 689.88

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Solution

The fourth proportional to 950.52, 1,424.33 and 689.88 is: 1,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.52 : 1,424.33 = 689.88 : x
  2. Step 2: Convert to fraction form
    950.52/1,424.33 = 689.88/x
  3. Step 3: Cross multiply
    950.52x = 1,424.33 × 689.88
  4. Step 4: Simplify right side
    950.52x = 982,613.33
  5. Step 5: Solve for x
    x = 982,613.33/950.52
  6. Step 6: Final answer
    x = 1,033.76

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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.