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Finding the Fourth Proportional to 343.51, 474.02 and 196.15

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Solution

The fourth proportional to 343.51, 474.02 and 196.15 is: 270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.51 : 474.02 = 196.15 : x
  2. Step 2: Convert to fraction form
    343.51/474.02 = 196.15/x
  3. Step 3: Cross multiply
    343.51x = 474.02 × 196.15
  4. Step 4: Simplify right side
    343.51x = 92,979.02
  5. Step 5: Solve for x
    x = 92,979.02/343.51
  6. Step 6: Final answer
    x = 270.67

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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.