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Finding the Fourth Proportional to 300.14, 449.66 and 191.72

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Solution

The fourth proportional to 300.14, 449.66 and 191.72 is: 287.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.14 : 449.66 = 191.72 : x
  2. Step 2: Convert to fraction form
    300.14/449.66 = 191.72/x
  3. Step 3: Cross multiply
    300.14x = 449.66 × 191.72
  4. Step 4: Simplify right side
    300.14x = 86,208.82
  5. Step 5: Solve for x
    x = 86,208.82/300.14
  6. Step 6: Final answer
    x = 287.23

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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.