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Finding the Fourth Proportional to 274.03, 411.05 and 111.83

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Solution

The fourth proportional to 274.03, 411.05 and 111.83 is: 167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.03 : 411.05 = 111.83 : x
  2. Step 2: Convert to fraction form
    274.03/411.05 = 111.83/x
  3. Step 3: Cross multiply
    274.03x = 411.05 × 111.83
  4. Step 4: Simplify right side
    274.03x = 45,967.72
  5. Step 5: Solve for x
    x = 45,967.72/274.03
  6. Step 6: Final answer
    x = 167.75

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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.