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Finding the Fourth Proportional to 338.67, 467.10 and 286.36

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Solution

The fourth proportional to 338.67, 467.10 and 286.36 is: 394.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.67 : 467.10 = 286.36 : x
  2. Step 2: Convert to fraction form
    338.67/467.10 = 286.36/x
  3. Step 3: Cross multiply
    338.67x = 467.10 × 286.36
  4. Step 4: Simplify right side
    338.67x = 133,758.76
  5. Step 5: Solve for x
    x = 133,758.76/338.67
  6. Step 6: Final answer
    x = 394.95

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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.