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Finding the Fourth Proportional to 343.93, 474.65 and 196.61

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Solution

The fourth proportional to 343.93, 474.65 and 196.61 is: 271.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.93 : 474.65 = 196.61 : x
  2. Step 2: Convert to fraction form
    343.93/474.65 = 196.61/x
  3. Step 3: Cross multiply
    343.93x = 474.65 × 196.61
  4. Step 4: Simplify right side
    343.93x = 93,320.94
  5. Step 5: Solve for x
    x = 93,320.94/343.93
  6. Step 6: Final answer
    x = 271.34

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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.