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Finding the Fourth Proportional to 952.39, 1,429.04 and 432.78

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Solution

The fourth proportional to 952.39, 1,429.04 and 432.78 is: 649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.39 : 1,429.04 = 432.78 : x
  2. Step 2: Convert to fraction form
    952.39/1,429.04 = 432.78/x
  3. Step 3: Cross multiply
    952.39x = 1,429.04 × 432.78
  4. Step 4: Simplify right side
    952.39x = 618,455.65
  5. Step 5: Solve for x
    x = 618,455.65/952.39
  6. Step 6: Final answer
    x = 649.37

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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.