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Finding the Fourth Proportional to 342.82, 473.09 and 195.45

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Solution

The fourth proportional to 342.82, 473.09 and 195.45 is: 269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.82 : 473.09 = 195.45 : x
  2. Step 2: Convert to fraction form
    342.82/473.09 = 195.45/x
  3. Step 3: Cross multiply
    342.82x = 473.09 × 195.45
  4. Step 4: Simplify right side
    342.82x = 92,462.10
  5. Step 5: Solve for x
    x = 92,462.10/342.82
  6. Step 6: Final answer
    x = 269.71

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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.