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Finding the Fourth Proportional to 338.20, 466.38 and 268.12

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Solution

The fourth proportional to 338.20, 466.38 and 268.12 is: 369.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.20 : 466.38 = 268.12 : x
  2. Step 2: Convert to fraction form
    338.20/466.38 = 268.12/x
  3. Step 3: Cross multiply
    338.20x = 466.38 × 268.12
  4. Step 4: Simplify right side
    338.20x = 125,045.81
  5. Step 5: Solve for x
    x = 125,045.81/338.20
  6. Step 6: Final answer
    x = 369.74

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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.