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Finding the Fourth Proportional to 343.20, 473.61 and 195.87

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Solution

The fourth proportional to 343.20, 473.61 and 195.87 is: 270.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.20 : 473.61 = 195.87 : x
  2. Step 2: Convert to fraction form
    343.20/473.61 = 195.87/x
  3. Step 3: Cross multiply
    343.20x = 473.61 × 195.87
  4. Step 4: Simplify right side
    343.20x = 92,765.99
  5. Step 5: Solve for x
    x = 92,765.99/343.20
  6. Step 6: Final answer
    x = 270.30

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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.