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Finding the Fourth Proportional to 932.46, 1,287.18 and 843.54

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Solution

The fourth proportional to 932.46, 1,287.18 and 843.54 is: 1,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.46 : 1,287.18 = 843.54 : x
  2. Step 2: Convert to fraction form
    932.46/1,287.18 = 843.54/x
  3. Step 3: Cross multiply
    932.46x = 1,287.18 × 843.54
  4. Step 4: Simplify right side
    932.46x = 1,085,787.82
  5. Step 5: Solve for x
    x = 1,085,787.82/932.46
  6. Step 6: Final answer
    x = 1,164.43

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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.