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Finding the Fourth Proportional to 482.80, 667.02 and 443.92

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Solution

The fourth proportional to 482.80, 667.02 and 443.92 is: 613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.80 : 667.02 = 443.92 : x
  2. Step 2: Convert to fraction form
    482.80/667.02 = 443.92/x
  3. Step 3: Cross multiply
    482.80x = 667.02 × 443.92
  4. Step 4: Simplify right side
    482.80x = 296,103.52
  5. Step 5: Solve for x
    x = 296,103.52/482.80
  6. Step 6: Final answer
    x = 613.30

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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.