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Finding the Fourth Proportional to 199.17, 274.73 and 168.12

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Solution

The fourth proportional to 199.17, 274.73 and 168.12 is: 231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.17 : 274.73 = 168.12 : x
  2. Step 2: Convert to fraction form
    199.17/274.73 = 168.12/x
  3. Step 3: Cross multiply
    199.17x = 274.73 × 168.12
  4. Step 4: Simplify right side
    199.17x = 46,186.77
  5. Step 5: Solve for x
    x = 46,186.77/199.17
  6. Step 6: Final answer
    x = 231.90

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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.