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Finding the Fourth Proportional to 343.74, 474.41 and 196.40

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Solution

The fourth proportional to 343.74, 474.41 and 196.40 is: 271.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.74 : 474.41 = 196.40 : x
  2. Step 2: Convert to fraction form
    343.74/474.41 = 196.40/x
  3. Step 3: Cross multiply
    343.74x = 474.41 × 196.40
  4. Step 4: Simplify right side
    343.74x = 93,174.12
  5. Step 5: Solve for x
    x = 93,174.12/343.74
  6. Step 6: Final answer
    x = 271.06

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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.