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Finding the Fourth Proportional to 297.04, 409.47 and 198.61

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Solution

The fourth proportional to 297.04, 409.47 and 198.61 is: 273.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.04 : 409.47 = 198.61 : x
  2. Step 2: Convert to fraction form
    297.04/409.47 = 198.61/x
  3. Step 3: Cross multiply
    297.04x = 409.47 × 198.61
  4. Step 4: Simplify right side
    297.04x = 81,324.84
  5. Step 5: Solve for x
    x = 81,324.84/297.04
  6. Step 6: Final answer
    x = 273.78

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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.