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Finding the Fourth Proportional to 300.28, 414.28 and 272.56

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Solution

The fourth proportional to 300.28, 414.28 and 272.56 is: 376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.28 : 414.28 = 272.56 : x
  2. Step 2: Convert to fraction form
    300.28/414.28 = 272.56/x
  3. Step 3: Cross multiply
    300.28x = 414.28 × 272.56
  4. Step 4: Simplify right side
    300.28x = 112,916.16
  5. Step 5: Solve for x
    x = 112,916.16/300.28
  6. Step 6: Final answer
    x = 376.04

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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.