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Finding the Fourth Proportional to 329.39, 454.51 and 196.57

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Solution

The fourth proportional to 329.39, 454.51 and 196.57 is: 271.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.39 : 454.51 = 196.57 : x
  2. Step 2: Convert to fraction form
    329.39/454.51 = 196.57/x
  3. Step 3: Cross multiply
    329.39x = 454.51 × 196.57
  4. Step 4: Simplify right side
    329.39x = 89,343.84
  5. Step 5: Solve for x
    x = 89,343.84/329.39
  6. Step 6: Final answer
    x = 271.24

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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.