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Finding the Fourth Proportional to 675.91, 932.90 and 396.29

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Solution

The fourth proportional to 675.91, 932.90 and 396.29 is: 546.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.91 : 932.90 = 396.29 : x
  2. Step 2: Convert to fraction form
    675.91/932.90 = 396.29/x
  3. Step 3: Cross multiply
    675.91x = 932.90 × 396.29
  4. Step 4: Simplify right side
    675.91x = 369,696.96
  5. Step 5: Solve for x
    x = 369,696.96/675.91
  6. Step 6: Final answer
    x = 546.96

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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.