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Finding the Fourth Proportional to 329.28, 454.39 and 181.91

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Solution

The fourth proportional to 329.28, 454.39 and 181.91 is: 251.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.28 : 454.39 = 181.91 : x
  2. Step 2: Convert to fraction form
    329.28/454.39 = 181.91/x
  3. Step 3: Cross multiply
    329.28x = 454.39 × 181.91
  4. Step 4: Simplify right side
    329.28x = 82,659.79
  5. Step 5: Solve for x
    x = 82,659.79/329.28
  6. Step 6: Final answer
    x = 251.03

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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.