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Finding the Fourth Proportional to 334.28, 460.42 and 287.56

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Solution

The fourth proportional to 334.28, 460.42 and 287.56 is: 396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.28 : 460.42 = 287.56 : x
  2. Step 2: Convert to fraction form
    334.28/460.42 = 287.56/x
  3. Step 3: Cross multiply
    334.28x = 460.42 × 287.56
  4. Step 4: Simplify right side
    334.28x = 132,398.38
  5. Step 5: Solve for x
    x = 132,398.38/334.28
  6. Step 6: Final answer
    x = 396.07

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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.