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Finding the Fourth Proportional to 339.28, 508.62 and 165.85

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Solution

The fourth proportional to 339.28, 508.62 and 165.85 is: 248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.28 : 508.62 = 165.85 : x
  2. Step 2: Convert to fraction form
    339.28/508.62 = 165.85/x
  3. Step 3: Cross multiply
    339.28x = 508.62 × 165.85
  4. Step 4: Simplify right side
    339.28x = 84,354.63
  5. Step 5: Solve for x
    x = 84,354.63/339.28
  6. Step 6: Final answer
    x = 248.63

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