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Finding the Fourth Proportional to 664.31, 995.60 and 371.79

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Solution

The fourth proportional to 664.31, 995.60 and 371.79 is: 557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.31 : 995.60 = 371.79 : x
  2. Step 2: Convert to fraction form
    664.31/995.60 = 371.79/x
  3. Step 3: Cross multiply
    664.31x = 995.60 × 371.79
  4. Step 4: Simplify right side
    664.31x = 370,152.27
  5. Step 5: Solve for x
    x = 370,152.27/664.31
  6. Step 6: Final answer
    x = 557.20

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