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Finding the Fourth Proportional to 300.33, 414.18 and 217.40

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Solution

The fourth proportional to 300.33, 414.18 and 217.40 is: 299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.33 : 414.18 = 217.40 : x
  2. Step 2: Convert to fraction form
    300.33/414.18 = 217.40/x
  3. Step 3: Cross multiply
    300.33x = 414.18 × 217.40
  4. Step 4: Simplify right side
    300.33x = 90,040.66
  5. Step 5: Solve for x
    x = 90,040.66/300.33
  6. Step 6: Final answer
    x = 299.81

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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.