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Finding the Fourth Proportional to 397.81, 596.71 and 317.62

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Solution

The fourth proportional to 397.81, 596.71 and 317.62 is: 476.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.81 : 596.71 = 317.62 : x
  2. Step 2: Convert to fraction form
    397.81/596.71 = 317.62/x
  3. Step 3: Cross multiply
    397.81x = 596.71 × 317.62
  4. Step 4: Simplify right side
    397.81x = 189,524.05
  5. Step 5: Solve for x
    x = 189,524.05/397.81
  6. Step 6: Final answer
    x = 476.42

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