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Finding the Fourth Proportional to 262.42, 362.18 and 196.81

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Solution

The fourth proportional to 262.42, 362.18 and 196.81 is: 271.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.42 : 362.18 = 196.81 : x
  2. Step 2: Convert to fraction form
    262.42/362.18 = 196.81/x
  3. Step 3: Cross multiply
    262.42x = 362.18 × 196.81
  4. Step 4: Simplify right side
    262.42x = 71,281.72
  5. Step 5: Solve for x
    x = 71,281.72/262.42
  6. Step 6: Final answer
    x = 271.63

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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.