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Finding the Fourth Proportional to 329.28, 493.11 and 265.02

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Solution

The fourth proportional to 329.28, 493.11 and 265.02 is: 396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.28 : 493.11 = 265.02 : x
  2. Step 2: Convert to fraction form
    329.28/493.11 = 265.02/x
  3. Step 3: Cross multiply
    329.28x = 493.11 × 265.02
  4. Step 4: Simplify right side
    329.28x = 130,684.01
  5. Step 5: Solve for x
    x = 130,684.01/329.28
  6. Step 6: Final answer
    x = 396.88

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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.