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Finding the Fourth Proportional to 183.07, 274.42 and 128.23

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Solution

The fourth proportional to 183.07, 274.42 and 128.23 is: 192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.07 : 274.42 = 128.23 : x
  2. Step 2: Convert to fraction form
    183.07/274.42 = 128.23/x
  3. Step 3: Cross multiply
    183.07x = 274.42 × 128.23
  4. Step 4: Simplify right side
    183.07x = 35,188.88
  5. Step 5: Solve for x
    x = 35,188.88/183.07
  6. Step 6: Final answer
    x = 192.22

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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.