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Finding the Fourth Proportional to 284.82, 427.24 and 102.21

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Solution

The fourth proportional to 284.82, 427.24 and 102.21 is: 153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.82 : 427.24 = 102.21 : x
  2. Step 2: Convert to fraction form
    284.82/427.24 = 102.21/x
  3. Step 3: Cross multiply
    284.82x = 427.24 × 102.21
  4. Step 4: Simplify right side
    284.82x = 43,669.13
  5. Step 5: Solve for x
    x = 43,669.13/284.82
  6. Step 6: Final answer
    x = 153.32

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