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Finding the Fourth Proportional to 451.27, 676.30 and 328.96

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Solution

The fourth proportional to 451.27, 676.30 and 328.96 is: 493.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.27 : 676.30 = 328.96 : x
  2. Step 2: Convert to fraction form
    451.27/676.30 = 328.96/x
  3. Step 3: Cross multiply
    451.27x = 676.30 × 328.96
  4. Step 4: Simplify right side
    451.27x = 222,475.65
  5. Step 5: Solve for x
    x = 222,475.65/451.27
  6. Step 6: Final answer
    x = 493.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.