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Finding the Fourth Proportional to 262.15, 361.77 and 196.69

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Solution

The fourth proportional to 262.15, 361.77 and 196.69 is: 271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.15 : 361.77 = 196.69 : x
  2. Step 2: Convert to fraction form
    262.15/361.77 = 196.69/x
  3. Step 3: Cross multiply
    262.15x = 361.77 × 196.69
  4. Step 4: Simplify right side
    262.15x = 71,156.54
  5. Step 5: Solve for x
    x = 71,156.54/262.15
  6. Step 6: Final answer
    x = 271.43

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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.