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Finding the Fourth Proportional to 183.65, 275.37 and 80.81

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Solution

The fourth proportional to 183.65, 275.37 and 80.81 is: 121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.65 : 275.37 = 80.81 : x
  2. Step 2: Convert to fraction form
    183.65/275.37 = 80.81/x
  3. Step 3: Cross multiply
    183.65x = 275.37 × 80.81
  4. Step 4: Simplify right side
    183.65x = 22,252.65
  5. Step 5: Solve for x
    x = 22,252.65/183.65
  6. Step 6: Final answer
    x = 121.17

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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.