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Finding the Fourth Proportional to 375.22, 517.83 and 217.86

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Solution

The fourth proportional to 375.22, 517.83 and 217.86 is: 300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.22 : 517.83 = 217.86 : x
  2. Step 2: Convert to fraction form
    375.22/517.83 = 217.86/x
  3. Step 3: Cross multiply
    375.22x = 517.83 × 217.86
  4. Step 4: Simplify right side
    375.22x = 112,811.68
  5. Step 5: Solve for x
    x = 112,811.68/375.22
  6. Step 6: Final answer
    x = 300.65

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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.