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Finding the Fourth Proportional to 300.11, 449.75 and 238.95

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Solution

The fourth proportional to 300.11, 449.75 and 238.95 is: 358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.11 : 449.75 = 238.95 : x
  2. Step 2: Convert to fraction form
    300.11/449.75 = 238.95/x
  3. Step 3: Cross multiply
    300.11x = 449.75 × 238.95
  4. Step 4: Simplify right side
    300.11x = 107,468.36
  5. Step 5: Solve for x
    x = 107,468.36/300.11
  6. Step 6: Final answer
    x = 358.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.