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Finding the Fourth Proportional to 295.20, 442.81 and 89.80

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Solution

The fourth proportional to 295.20, 442.81 and 89.80 is: 134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.20 : 442.81 = 89.80 : x
  2. Step 2: Convert to fraction form
    295.20/442.81 = 89.80/x
  3. Step 3: Cross multiply
    295.20x = 442.81 × 89.80
  4. Step 4: Simplify right side
    295.20x = 39,763.01
  5. Step 5: Solve for x
    x = 39,763.01/295.20
  6. Step 6: Final answer
    x = 134.70

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