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Finding the Fourth Proportional to 346.48, 519.62 and 209.39

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Solution

The fourth proportional to 346.48, 519.62 and 209.39 is: 314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.48 : 519.62 = 209.39 : x
  2. Step 2: Convert to fraction form
    346.48/519.62 = 209.39/x
  3. Step 3: Cross multiply
    346.48x = 519.62 × 209.39
  4. Step 4: Simplify right side
    346.48x = 108,799.59
  5. Step 5: Solve for x
    x = 108,799.59/346.48
  6. Step 6: Final answer
    x = 314.02

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