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Finding the Fourth Proportional to 183.05, 274.17 and 142.15

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Solution

The fourth proportional to 183.05, 274.17 and 142.15 is: 212.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.05 : 274.17 = 142.15 : x
  2. Step 2: Convert to fraction form
    183.05/274.17 = 142.15/x
  3. Step 3: Cross multiply
    183.05x = 274.17 × 142.15
  4. Step 4: Simplify right side
    183.05x = 38,973.27
  5. Step 5: Solve for x
    x = 38,973.27/183.05
  6. Step 6: Final answer
    x = 212.91

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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.