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Finding the Fourth Proportional to 320.59, 481.11 and 198.48

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Solution

The fourth proportional to 320.59, 481.11 and 198.48 is: 297.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.59 : 481.11 = 198.48 : x
  2. Step 2: Convert to fraction form
    320.59/481.11 = 198.48/x
  3. Step 3: Cross multiply
    320.59x = 481.11 × 198.48
  4. Step 4: Simplify right side
    320.59x = 95,491.77
  5. Step 5: Solve for x
    x = 95,491.77/320.59
  6. Step 6: Final answer
    x = 297.86

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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.