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Finding the Fourth Proportional to 494.92, 682.92 and 298.48

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Solution

The fourth proportional to 494.92, 682.92 and 298.48 is: 411.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.92 : 682.92 = 298.48 : x
  2. Step 2: Convert to fraction form
    494.92/682.92 = 298.48/x
  3. Step 3: Cross multiply
    494.92x = 682.92 × 298.48
  4. Step 4: Simplify right side
    494.92x = 203,837.96
  5. Step 5: Solve for x
    x = 203,837.96/494.92
  6. Step 6: Final answer
    x = 411.86

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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.