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Finding the Fourth Proportional to 183.51, 275.28 and 80.75

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Solution

The fourth proportional to 183.51, 275.28 and 80.75 is: 121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.51 : 275.28 = 80.75 : x
  2. Step 2: Convert to fraction form
    183.51/275.28 = 80.75/x
  3. Step 3: Cross multiply
    183.51x = 275.28 × 80.75
  4. Step 4: Simplify right side
    183.51x = 22,227.08
  5. Step 5: Solve for x
    x = 22,227.08/183.51
  6. Step 6: Final answer
    x = 121.12

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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.