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Finding the Fourth Proportional to 375.26, 517.82 and 215.75

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Solution

The fourth proportional to 375.26, 517.82 and 215.75 is: 297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.26 : 517.82 = 215.75 : x
  2. Step 2: Convert to fraction form
    375.26/517.82 = 215.75/x
  3. Step 3: Cross multiply
    375.26x = 517.82 × 215.75
  4. Step 4: Simplify right side
    375.26x = 111,716.00
  5. Step 5: Solve for x
    x = 111,716.00/375.26
  6. Step 6: Final answer
    x = 297.71

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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.