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Finding the Fourth Proportional to 339.25, 508.88 and 82.75

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Solution

The fourth proportional to 339.25, 508.88 and 82.75 is: 124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.25 : 508.88 = 82.75 : x
  2. Step 2: Convert to fraction form
    339.25/508.88 = 82.75/x
  3. Step 3: Cross multiply
    339.25x = 508.88 × 82.75
  4. Step 4: Simplify right side
    339.25x = 42,109.41
  5. Step 5: Solve for x
    x = 42,109.41/339.25
  6. Step 6: Final answer
    x = 124.13

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