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Finding the Fourth Proportional to 336.42, 464.30 and 196.61

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Solution

The fourth proportional to 336.42, 464.30 and 196.61 is: 271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.42 : 464.30 = 196.61 : x
  2. Step 2: Convert to fraction form
    336.42/464.30 = 196.61/x
  3. Step 3: Cross multiply
    336.42x = 464.30 × 196.61
  4. Step 4: Simplify right side
    336.42x = 91,287.68
  5. Step 5: Solve for x
    x = 91,287.68/336.42
  6. Step 6: Final answer
    x = 271.35

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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.