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Finding the Fourth Proportional to 299.07, 448.22 and 217.09

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Solution

The fourth proportional to 299.07, 448.22 and 217.09 is: 325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.07 : 448.22 = 217.09 : x
  2. Step 2: Convert to fraction form
    299.07/448.22 = 217.09/x
  3. Step 3: Cross multiply
    299.07x = 448.22 × 217.09
  4. Step 4: Simplify right side
    299.07x = 97,304.08
  5. Step 5: Solve for x
    x = 97,304.08/299.07
  6. Step 6: Final answer
    x = 325.36

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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.