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Finding the Fourth Proportional to 183.22, 274.75 and 80.45

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Solution

The fourth proportional to 183.22, 274.75 and 80.45 is: 120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.22 : 274.75 = 80.45 : x
  2. Step 2: Convert to fraction form
    183.22/274.75 = 80.45/x
  3. Step 3: Cross multiply
    183.22x = 274.75 × 80.45
  4. Step 4: Simplify right side
    183.22x = 22,102.46
  5. Step 5: Solve for x
    x = 22,102.46/183.22
  6. Step 6: Final answer
    x = 120.64

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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.