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Finding the Fourth Proportional to 227.48, 339.27 and 220.64

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Solution

The fourth proportional to 227.48, 339.27 and 220.64 is: 329.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.48 : 339.27 = 220.64 : x
  2. Step 2: Convert to fraction form
    227.48/339.27 = 220.64/x
  3. Step 3: Cross multiply
    227.48x = 339.27 × 220.64
  4. Step 4: Simplify right side
    227.48x = 74,854.84
  5. Step 5: Solve for x
    x = 74,854.84/227.48
  6. Step 6: Final answer
    x = 329.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.