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Finding the Fourth Proportional to 342.78, 473.06 and 195.42

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Solution

The fourth proportional to 342.78, 473.06 and 195.42 is: 269.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.78 : 473.06 = 195.42 : x
  2. Step 2: Convert to fraction form
    342.78/473.06 = 195.42/x
  3. Step 3: Cross multiply
    342.78x = 473.06 × 195.42
  4. Step 4: Simplify right side
    342.78x = 92,445.39
  5. Step 5: Solve for x
    x = 92,445.39/342.78
  6. Step 6: Final answer
    x = 269.69

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