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Finding the Fourth Proportional to 342.80, 473.09 and 195.44

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Solution

The fourth proportional to 342.80, 473.09 and 195.44 is: 269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.80 : 473.09 = 195.44 : x
  2. Step 2: Convert to fraction form
    342.80/473.09 = 195.44/x
  3. Step 3: Cross multiply
    342.80x = 473.09 × 195.44
  4. Step 4: Simplify right side
    342.80x = 92,459.73
  5. Step 5: Solve for x
    x = 92,459.73/342.80
  6. Step 6: Final answer
    x = 269.72

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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.