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Finding the Fourth Proportional to 299, 448.13 and 230.78

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Solution

The fourth proportional to 299, 448.13 and 230.78 is: 345.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    299 : 448.13 = 230.78 : x
  2. Step 2: Convert to fraction form
    299/448.13 = 230.78/x
  3. Step 3: Cross multiply
    299x = 448.13 × 230.78
  4. Step 4: Simplify right side
    299x = 103,418.29
  5. Step 5: Solve for x
    x = 103,418.29/299
  6. Step 6: Final answer
    x = 345.88

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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.