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Finding the Fourth Proportional to 375.12, 517.80 and 227.72

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Solution

The fourth proportional to 375.12, 517.80 and 227.72 is: 314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.12 : 517.80 = 227.72 : x
  2. Step 2: Convert to fraction form
    375.12/517.80 = 227.72/x
  3. Step 3: Cross multiply
    375.12x = 517.80 × 227.72
  4. Step 4: Simplify right side
    375.12x = 117,913.42
  5. Step 5: Solve for x
    x = 117,913.42/375.12
  6. Step 6: Final answer
    x = 314.34

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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.