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Finding the Fourth Proportional to 413.92, 620.40 and 292

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Solution

The fourth proportional to 413.92, 620.40 and 292 is: 437.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.92 : 620.40 = 292 : x
  2. Step 2: Convert to fraction form
    413.92/620.40 = 292/x
  3. Step 3: Cross multiply
    413.92x = 620.40 × 292
  4. Step 4: Simplify right side
    413.92x = 181,156.80
  5. Step 5: Solve for x
    x = 181,156.80/413.92
  6. Step 6: Final answer
    x = 437.66

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