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Finding the Fourth Proportional to 494.97, 683.37 and 308.58

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Solution

The fourth proportional to 494.97, 683.37 and 308.58 is: 426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.97 : 683.37 = 308.58 : x
  2. Step 2: Convert to fraction form
    494.97/683.37 = 308.58/x
  3. Step 3: Cross multiply
    494.97x = 683.37 × 308.58
  4. Step 4: Simplify right side
    494.97x = 210,874.31
  5. Step 5: Solve for x
    x = 210,874.31/494.97
  6. Step 6: Final answer
    x = 426.03

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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.