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Finding the Fourth Proportional to 525.76, 787.98 and 200.80

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Solution

The fourth proportional to 525.76, 787.98 and 200.80 is: 300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.76 : 787.98 = 200.80 : x
  2. Step 2: Convert to fraction form
    525.76/787.98 = 200.80/x
  3. Step 3: Cross multiply
    525.76x = 787.98 × 200.80
  4. Step 4: Simplify right side
    525.76x = 158,226.38
  5. Step 5: Solve for x
    x = 158,226.38/525.76
  6. Step 6: Final answer
    x = 300.95

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