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Finding the Fourth Proportional to 327.19, 451.12 and 257.04

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Solution

The fourth proportional to 327.19, 451.12 and 257.04 is: 354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.19 : 451.12 = 257.04 : x
  2. Step 2: Convert to fraction form
    327.19/451.12 = 257.04/x
  3. Step 3: Cross multiply
    327.19x = 451.12 × 257.04
  4. Step 4: Simplify right side
    327.19x = 115,955.88
  5. Step 5: Solve for x
    x = 115,955.88/327.19
  6. Step 6: Final answer
    x = 354.40

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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.