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Finding the Fourth Proportional to 453.92, 679.83 and 331.88

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Solution

The fourth proportional to 453.92, 679.83 and 331.88 is: 497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.92 : 679.83 = 331.88 : x
  2. Step 2: Convert to fraction form
    453.92/679.83 = 331.88/x
  3. Step 3: Cross multiply
    453.92x = 679.83 × 331.88
  4. Step 4: Simplify right side
    453.92x = 225,617.34
  5. Step 5: Solve for x
    x = 225,617.34/453.92
  6. Step 6: Final answer
    x = 497.05

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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.