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Finding the Fourth Proportional to 375.05, 517.42 and 219.71

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Solution

The fourth proportional to 375.05, 517.42 and 219.71 is: 303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.05 : 517.42 = 219.71 : x
  2. Step 2: Convert to fraction form
    375.05/517.42 = 219.71/x
  3. Step 3: Cross multiply
    375.05x = 517.42 × 219.71
  4. Step 4: Simplify right side
    375.05x = 113,682.35
  5. Step 5: Solve for x
    x = 113,682.35/375.05
  6. Step 6: Final answer
    x = 303.11

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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.