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Finding the Fourth Proportional to 393, 590.37 and 256.26

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Solution

The fourth proportional to 393, 590.37 and 256.26 is: 384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393 : 590.37 = 256.26 : x
  2. Step 2: Convert to fraction form
    393/590.37 = 256.26/x
  3. Step 3: Cross multiply
    393x = 590.37 × 256.26
  4. Step 4: Simplify right side
    393x = 151,288.22
  5. Step 5: Solve for x
    x = 151,288.22/393
  6. Step 6: Final answer
    x = 384.96

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