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Finding the Fourth Proportional to 352.11, 485.74 and 227.88

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Solution

The fourth proportional to 352.11, 485.74 and 227.88 is: 314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.11 : 485.74 = 227.88 : x
  2. Step 2: Convert to fraction form
    352.11/485.74 = 227.88/x
  3. Step 3: Cross multiply
    352.11x = 485.74 × 227.88
  4. Step 4: Simplify right side
    352.11x = 110,690.43
  5. Step 5: Solve for x
    x = 110,690.43/352.11
  6. Step 6: Final answer
    x = 314.36

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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.