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Finding the Fourth Proportional to 474.76, 655.14 and 343.72

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Solution

The fourth proportional to 474.76, 655.14 and 343.72 is: 474.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.76 : 655.14 = 343.72 : x
  2. Step 2: Convert to fraction form
    474.76/655.14 = 343.72/x
  3. Step 3: Cross multiply
    474.76x = 655.14 × 343.72
  4. Step 4: Simplify right side
    474.76x = 225,184.72
  5. Step 5: Solve for x
    x = 225,184.72/474.76
  6. Step 6: Final answer
    x = 474.31

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