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Finding the Fourth Proportional to 375.14, 517.72 and 217.82

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Solution

The fourth proportional to 375.14, 517.72 and 217.82 is: 300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.14 : 517.72 = 217.82 : x
  2. Step 2: Convert to fraction form
    375.14/517.72 = 217.82/x
  3. Step 3: Cross multiply
    375.14x = 517.72 × 217.82
  4. Step 4: Simplify right side
    375.14x = 112,770.93
  5. Step 5: Solve for x
    x = 112,770.93/375.14
  6. Step 6: Final answer
    x = 300.61

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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.