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Finding the Fourth Proportional to 227.63, 314.24 and 217.86

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Solution

The fourth proportional to 227.63, 314.24 and 217.86 is: 300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.63 : 314.24 = 217.86 : x
  2. Step 2: Convert to fraction form
    227.63/314.24 = 217.86/x
  3. Step 3: Cross multiply
    227.63x = 314.24 × 217.86
  4. Step 4: Simplify right side
    227.63x = 68,460.33
  5. Step 5: Solve for x
    x = 68,460.33/227.63
  6. Step 6: Final answer
    x = 300.75

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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.