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Finding the Fourth Proportional to 300.67, 449.96 and 208.22

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Solution

The fourth proportional to 300.67, 449.96 and 208.22 is: 311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.67 : 449.96 = 208.22 : x
  2. Step 2: Convert to fraction form
    300.67/449.96 = 208.22/x
  3. Step 3: Cross multiply
    300.67x = 449.96 × 208.22
  4. Step 4: Simplify right side
    300.67x = 93,687.38
  5. Step 5: Solve for x
    x = 93,687.38/300.67
  6. Step 6: Final answer
    x = 311.60

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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.