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Finding the Fourth Proportional to 284.76, 426.96 and 156.60

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Solution

The fourth proportional to 284.76, 426.96 and 156.60 is: 234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.76 : 426.96 = 156.60 : x
  2. Step 2: Convert to fraction form
    284.76/426.96 = 156.60/x
  3. Step 3: Cross multiply
    284.76x = 426.96 × 156.60
  4. Step 4: Simplify right side
    284.76x = 66,861.94
  5. Step 5: Solve for x
    x = 66,861.94/284.76
  6. Step 6: Final answer
    x = 234.80

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