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Finding the Fourth Proportional to 453.06, 679.56 and 221.92

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Solution

The fourth proportional to 453.06, 679.56 and 221.92 is: 332.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.06 : 679.56 = 221.92 : x
  2. Step 2: Convert to fraction form
    453.06/679.56 = 221.92/x
  3. Step 3: Cross multiply
    453.06x = 679.56 × 221.92
  4. Step 4: Simplify right side
    453.06x = 150,807.96
  5. Step 5: Solve for x
    x = 150,807.96/453.06
  6. Step 6: Final answer
    x = 332.87

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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.