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Finding the Fourth Proportional to 273.24, 409.93 and 90.64

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Solution

The fourth proportional to 273.24, 409.93 and 90.64 is: 135.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.24 : 409.93 = 90.64 : x
  2. Step 2: Convert to fraction form
    273.24/409.93 = 90.64/x
  3. Step 3: Cross multiply
    273.24x = 409.93 × 90.64
  4. Step 4: Simplify right side
    273.24x = 37,154.04
  5. Step 5: Solve for x
    x = 37,154.04/273.24
  6. Step 6: Final answer
    x = 135.98

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