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Finding the Fourth Proportional to 299.31, 449.06 and 190.97

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Solution

The fourth proportional to 299.31, 449.06 and 190.97 is: 286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.31 : 449.06 = 190.97 : x
  2. Step 2: Convert to fraction form
    299.31/449.06 = 190.97/x
  3. Step 3: Cross multiply
    299.31x = 449.06 × 190.97
  4. Step 4: Simplify right side
    299.31x = 85,753.79
  5. Step 5: Solve for x
    x = 85,753.79/299.31
  6. Step 6: Final answer
    x = 286.50

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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.