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Finding the Fourth Proportional to 676.04, 932.90 and 396.24

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Solution

The fourth proportional to 676.04, 932.90 and 396.24 is: 546.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.04 : 932.90 = 396.24 : x
  2. Step 2: Convert to fraction form
    676.04/932.90 = 396.24/x
  3. Step 3: Cross multiply
    676.04x = 932.90 × 396.24
  4. Step 4: Simplify right side
    676.04x = 369,650.31
  5. Step 5: Solve for x
    x = 369,650.31/676.04
  6. Step 6: Final answer
    x = 546.79

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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.