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Finding the Fourth Proportional to 284.34, 425.79 and 147

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Solution

The fourth proportional to 284.34, 425.79 and 147 is: 220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.34 : 425.79 = 147 : x
  2. Step 2: Convert to fraction form
    284.34/425.79 = 147/x
  3. Step 3: Cross multiply
    284.34x = 425.79 × 147
  4. Step 4: Simplify right side
    284.34x = 62,591.13
  5. Step 5: Solve for x
    x = 62,591.13/284.34
  6. Step 6: Final answer
    x = 220.13

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