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Finding the Fourth Proportional to 298.44, 411.75 and 193.61

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Solution

The fourth proportional to 298.44, 411.75 and 193.61 is: 267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.44 : 411.75 = 193.61 : x
  2. Step 2: Convert to fraction form
    298.44/411.75 = 193.61/x
  3. Step 3: Cross multiply
    298.44x = 411.75 × 193.61
  4. Step 4: Simplify right side
    298.44x = 79,716.92
  5. Step 5: Solve for x
    x = 79,716.92/298.44
  6. Step 6: Final answer
    x = 267.11

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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.