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Finding the Fourth Proportional to 401.92, 554.84 and 329.02

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Solution

The fourth proportional to 401.92, 554.84 and 329.02 is: 454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.92 : 554.84 = 329.02 : x
  2. Step 2: Convert to fraction form
    401.92/554.84 = 329.02/x
  3. Step 3: Cross multiply
    401.92x = 554.84 × 329.02
  4. Step 4: Simplify right side
    401.92x = 182,553.46
  5. Step 5: Solve for x
    x = 182,553.46/401.92
  6. Step 6: Final answer
    x = 454.20

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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.