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Finding the Fourth Proportional to 300.60, 449.19 and 268.20

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Solution

The fourth proportional to 300.60, 449.19 and 268.20 is: 400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.60 : 449.19 = 268.20 : x
  2. Step 2: Convert to fraction form
    300.60/449.19 = 268.20/x
  3. Step 3: Cross multiply
    300.60x = 449.19 × 268.20
  4. Step 4: Simplify right side
    300.60x = 120,472.76
  5. Step 5: Solve for x
    x = 120,472.76/300.60
  6. Step 6: Final answer
    x = 400.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.