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Finding the Fourth Proportional to 183.47, 274.89 and 129.09

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Solution

The fourth proportional to 183.47, 274.89 and 129.09 is: 193.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.47 : 274.89 = 129.09 : x
  2. Step 2: Convert to fraction form
    183.47/274.89 = 129.09/x
  3. Step 3: Cross multiply
    183.47x = 274.89 × 129.09
  4. Step 4: Simplify right side
    183.47x = 35,487.07
  5. Step 5: Solve for x
    x = 35,487.07/183.47
  6. Step 6: Final answer
    x = 193.43

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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.