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Finding the Fourth Proportional to 374.97, 517.31 and 227.55

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Solution

The fourth proportional to 374.97, 517.31 and 227.55 is: 313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.97 : 517.31 = 227.55 : x
  2. Step 2: Convert to fraction form
    374.97/517.31 = 227.55/x
  3. Step 3: Cross multiply
    374.97x = 517.31 × 227.55
  4. Step 4: Simplify right side
    374.97x = 117,713.89
  5. Step 5: Solve for x
    x = 117,713.89/374.97
  6. Step 6: Final answer
    x = 313.93

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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.