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Finding the Fourth Proportional to 932.54, 1,286.04 and 634.23

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Solution

The fourth proportional to 932.54, 1,286.04 and 634.23 is: 874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.54 : 1,286.04 = 634.23 : x
  2. Step 2: Convert to fraction form
    932.54/1,286.04 = 634.23/x
  3. Step 3: Cross multiply
    932.54x = 1,286.04 × 634.23
  4. Step 4: Simplify right side
    932.54x = 815,645.15
  5. Step 5: Solve for x
    x = 815,645.15/932.54
  6. Step 6: Final answer
    x = 874.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.