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Finding the Fourth Proportional to 299.13, 412.76 and 168.11

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Solution

The fourth proportional to 299.13, 412.76 and 168.11 is: 231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.13 : 412.76 = 168.11 : x
  2. Step 2: Convert to fraction form
    299.13/412.76 = 168.11/x
  3. Step 3: Cross multiply
    299.13x = 412.76 × 168.11
  4. Step 4: Simplify right side
    299.13x = 69,388.99
  5. Step 5: Solve for x
    x = 69,388.99/299.13
  6. Step 6: Final answer
    x = 231.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.