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Finding the Fourth Proportional to 300.46, 414.27 and 217.54

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Solution

The fourth proportional to 300.46, 414.27 and 217.54 is: 299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.46 : 414.27 = 217.54 : x
  2. Step 2: Convert to fraction form
    300.46/414.27 = 217.54/x
  3. Step 3: Cross multiply
    300.46x = 414.27 × 217.54
  4. Step 4: Simplify right side
    300.46x = 90,117.14
  5. Step 5: Solve for x
    x = 90,117.14/300.46
  6. Step 6: Final answer
    x = 299.93

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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.