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Finding the Fourth Proportional to 300.57, 414.84 and 195.78

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Solution

The fourth proportional to 300.57, 414.84 and 195.78 is: 270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.57 : 414.84 = 195.78 : x
  2. Step 2: Convert to fraction form
    300.57/414.84 = 195.78/x
  3. Step 3: Cross multiply
    300.57x = 414.84 × 195.78
  4. Step 4: Simplify right side
    300.57x = 81,217.38
  5. Step 5: Solve for x
    x = 81,217.38/300.57
  6. Step 6: Final answer
    x = 270.21

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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.