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Finding the Fourth Proportional to 453.29, 679.91 and 179.55

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Solution

The fourth proportional to 453.29, 679.91 and 179.55 is: 269.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.29 : 679.91 = 179.55 : x
  2. Step 2: Convert to fraction form
    453.29/679.91 = 179.55/x
  3. Step 3: Cross multiply
    453.29x = 679.91 × 179.55
  4. Step 4: Simplify right side
    453.29x = 122,076.94
  5. Step 5: Solve for x
    x = 122,076.94/453.29
  6. Step 6: Final answer
    x = 269.32

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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.