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Finding the Fourth Proportional to 329.14, 454.09 and 189.16

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Solution

The fourth proportional to 329.14, 454.09 and 189.16 is: 260.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.14 : 454.09 = 189.16 : x
  2. Step 2: Convert to fraction form
    329.14/454.09 = 189.16/x
  3. Step 3: Cross multiply
    329.14x = 454.09 × 189.16
  4. Step 4: Simplify right side
    329.14x = 85,895.66
  5. Step 5: Solve for x
    x = 85,895.66/329.14
  6. Step 6: Final answer
    x = 260.97

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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.