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Finding the Fourth Proportional to 182.17, 274.21 and 128.44

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Solution

The fourth proportional to 182.17, 274.21 and 128.44 is: 193.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.17 : 274.21 = 128.44 : x
  2. Step 2: Convert to fraction form
    182.17/274.21 = 128.44/x
  3. Step 3: Cross multiply
    182.17x = 274.21 × 128.44
  4. Step 4: Simplify right side
    182.17x = 35,219.53
  5. Step 5: Solve for x
    x = 35,219.53/182.17
  6. Step 6: Final answer
    x = 193.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.