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Finding the Fourth Proportional to 329.80, 494.70 and 201.52

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Solution

The fourth proportional to 329.80, 494.70 and 201.52 is: 302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.80 : 494.70 = 201.52 : x
  2. Step 2: Convert to fraction form
    329.80/494.70 = 201.52/x
  3. Step 3: Cross multiply
    329.80x = 494.70 × 201.52
  4. Step 4: Simplify right side
    329.80x = 99,691.94
  5. Step 5: Solve for x
    x = 99,691.94/329.80
  6. Step 6: Final answer
    x = 302.28

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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.