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Finding the Fourth Proportional to 329.56, 494.31 and 98.44

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Solution

The fourth proportional to 329.56, 494.31 and 98.44 is: 147.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.56 : 494.31 = 98.44 : x
  2. Step 2: Convert to fraction form
    329.56/494.31 = 98.44/x
  3. Step 3: Cross multiply
    329.56x = 494.31 × 98.44
  4. Step 4: Simplify right side
    329.56x = 48,659.88
  5. Step 5: Solve for x
    x = 48,659.88/329.56
  6. Step 6: Final answer
    x = 147.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.