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Finding the Fourth Proportional to 336.28, 464.12 and 280.92

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Solution

The fourth proportional to 336.28, 464.12 and 280.92 is: 387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.28 : 464.12 = 280.92 : x
  2. Step 2: Convert to fraction form
    336.28/464.12 = 280.92/x
  3. Step 3: Cross multiply
    336.28x = 464.12 × 280.92
  4. Step 4: Simplify right side
    336.28x = 130,380.59
  5. Step 5: Solve for x
    x = 130,380.59/336.28
  6. Step 6: Final answer
    x = 387.71

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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.