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Finding the Fourth Proportional to 338.28, 466.28 and 227.72

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Solution

The fourth proportional to 338.28, 466.28 and 227.72 is: 313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.28 : 466.28 = 227.72 : x
  2. Step 2: Convert to fraction form
    338.28/466.28 = 227.72/x
  3. Step 3: Cross multiply
    338.28x = 466.28 × 227.72
  4. Step 4: Simplify right side
    338.28x = 106,181.28
  5. Step 5: Solve for x
    x = 106,181.28/338.28
  6. Step 6: Final answer
    x = 313.89

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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.