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Finding the Fourth Proportional to 299.49, 448.87 and 169.30

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Solution

The fourth proportional to 299.49, 448.87 and 169.30 is: 253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.49 : 448.87 = 169.30 : x
  2. Step 2: Convert to fraction form
    299.49/448.87 = 169.30/x
  3. Step 3: Cross multiply
    299.49x = 448.87 × 169.30
  4. Step 4: Simplify right side
    299.49x = 75,993.69
  5. Step 5: Solve for x
    x = 75,993.69/299.49
  6. Step 6: Final answer
    x = 253.74

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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.