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Finding the Fourth Proportional to 552.70, 762.78 and 342.91

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Solution

The fourth proportional to 552.70, 762.78 and 342.91 is: 473.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.70 : 762.78 = 342.91 : x
  2. Step 2: Convert to fraction form
    552.70/762.78 = 342.91/x
  3. Step 3: Cross multiply
    552.70x = 762.78 × 342.91
  4. Step 4: Simplify right side
    552.70x = 261,564.89
  5. Step 5: Solve for x
    x = 261,564.89/552.70
  6. Step 6: Final answer
    x = 473.25

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