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Finding the Fourth Proportional to 299.80, 448.94 and 272.44

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Solution

The fourth proportional to 299.80, 448.94 and 272.44 is: 407.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.80 : 448.94 = 272.44 : x
  2. Step 2: Convert to fraction form
    299.80/448.94 = 272.44/x
  3. Step 3: Cross multiply
    299.80x = 448.94 × 272.44
  4. Step 4: Simplify right side
    299.80x = 122,309.21
  5. Step 5: Solve for x
    x = 122,309.21/299.80
  6. Step 6: Final answer
    x = 407.97

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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.