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Finding the Fourth Proportional to 719.99, 993.57 and 425.27

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Solution

The fourth proportional to 719.99, 993.57 and 425.27 is: 586.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.99 : 993.57 = 425.27 : x
  2. Step 2: Convert to fraction form
    719.99/993.57 = 425.27/x
  3. Step 3: Cross multiply
    719.99x = 993.57 × 425.27
  4. Step 4: Simplify right side
    719.99x = 422,530.55
  5. Step 5: Solve for x
    x = 422,530.55/719.99
  6. Step 6: Final answer
    x = 586.86

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