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Finding the Fourth Proportional to 413.29, 619.77 and 347.98

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Solution

The fourth proportional to 413.29, 619.77 and 347.98 is: 521.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.29 : 619.77 = 347.98 : x
  2. Step 2: Convert to fraction form
    413.29/619.77 = 347.98/x
  3. Step 3: Cross multiply
    413.29x = 619.77 × 347.98
  4. Step 4: Simplify right side
    413.29x = 215,667.56
  5. Step 5: Solve for x
    x = 215,667.56/413.29
  6. Step 6: Final answer
    x = 521.83

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