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Finding the Fourth Proportional to 291.19, 401.11 and 249.04

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Solution

The fourth proportional to 291.19, 401.11 and 249.04 is: 343.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.19 : 401.11 = 249.04 : x
  2. Step 2: Convert to fraction form
    291.19/401.11 = 249.04/x
  3. Step 3: Cross multiply
    291.19x = 401.11 × 249.04
  4. Step 4: Simplify right side
    291.19x = 99,889.18
  5. Step 5: Solve for x
    x = 99,889.18/291.19
  6. Step 6: Final answer
    x = 343.04

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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.