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Finding the Fourth Proportional to 647.29, 970.79 and 236.32

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Solution

The fourth proportional to 647.29, 970.79 and 236.32 is: 354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.29 : 970.79 = 236.32 : x
  2. Step 2: Convert to fraction form
    647.29/970.79 = 236.32/x
  3. Step 3: Cross multiply
    647.29x = 970.79 × 236.32
  4. Step 4: Simplify right side
    647.29x = 229,413.48
  5. Step 5: Solve for x
    x = 229,413.48/647.29
  6. Step 6: Final answer
    x = 354.42

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