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Finding the Fourth Proportional to 182.80, 274.22 and 74.56

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Solution

The fourth proportional to 182.80, 274.22 and 74.56 is: 111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.80 : 274.22 = 74.56 : x
  2. Step 2: Convert to fraction form
    182.80/274.22 = 74.56/x
  3. Step 3: Cross multiply
    182.80x = 274.22 × 74.56
  4. Step 4: Simplify right side
    182.80x = 20,445.84
  5. Step 5: Solve for x
    x = 20,445.84/182.80
  6. Step 6: Final answer
    x = 111.85

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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.