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Finding the Fourth Proportional to 182.67, 274.20 and 128.60

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Solution

The fourth proportional to 182.67, 274.20 and 128.60 is: 193.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.67 : 274.20 = 128.60 : x
  2. Step 2: Convert to fraction form
    182.67/274.20 = 128.60/x
  3. Step 3: Cross multiply
    182.67x = 274.20 × 128.60
  4. Step 4: Simplify right side
    182.67x = 35,262.12
  5. Step 5: Solve for x
    x = 35,262.12/182.67
  6. Step 6: Final answer
    x = 193.04

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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.