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Finding the Fourth Proportional to 293.90, 440.90 and 111.29

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Solution

The fourth proportional to 293.90, 440.90 and 111.29 is: 166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.90 : 440.90 = 111.29 : x
  2. Step 2: Convert to fraction form
    293.90/440.90 = 111.29/x
  3. Step 3: Cross multiply
    293.90x = 440.90 × 111.29
  4. Step 4: Simplify right side
    293.90x = 49,067.76
  5. Step 5: Solve for x
    x = 49,067.76/293.90
  6. Step 6: Final answer
    x = 166.96

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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.