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Finding the Fourth Proportional to 183.42, 252.95 and 121.23

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Solution

The fourth proportional to 183.42, 252.95 and 121.23 is: 167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.42 : 252.95 = 121.23 : x
  2. Step 2: Convert to fraction form
    183.42/252.95 = 121.23/x
  3. Step 3: Cross multiply
    183.42x = 252.95 × 121.23
  4. Step 4: Simplify right side
    183.42x = 30,664.52
  5. Step 5: Solve for x
    x = 30,664.52/183.42
  6. Step 6: Final answer
    x = 167.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.