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Finding the Fourth Proportional to 300.12, 411.74 and 267.36

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Solution

The fourth proportional to 300.12, 411.74 and 267.36 is: 366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.12 : 411.74 = 267.36 : x
  2. Step 2: Convert to fraction form
    300.12/411.74 = 267.36/x
  3. Step 3: Cross multiply
    300.12x = 411.74 × 267.36
  4. Step 4: Simplify right side
    300.12x = 110,081.47
  5. Step 5: Solve for x
    x = 110,081.47/300.12
  6. Step 6: Final answer
    x = 366.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.