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Finding the Fourth Proportional to 492.38, 679.19 and 295.85

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Solution

The fourth proportional to 492.38, 679.19 and 295.85 is: 408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.38 : 679.19 = 295.85 : x
  2. Step 2: Convert to fraction form
    492.38/679.19 = 295.85/x
  3. Step 3: Cross multiply
    492.38x = 679.19 × 295.85
  4. Step 4: Simplify right side
    492.38x = 200,938.58
  5. Step 5: Solve for x
    x = 200,938.58/492.38
  6. Step 6: Final answer
    x = 408.10

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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.