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Finding the Fourth Proportional to 719.88, 993.28 and 425.08

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Solution

The fourth proportional to 719.88, 993.28 and 425.08 is: 586.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.88 : 993.28 = 425.08 : x
  2. Step 2: Convert to fraction form
    719.88/993.28 = 425.08/x
  3. Step 3: Cross multiply
    719.88x = 993.28 × 425.08
  4. Step 4: Simplify right side
    719.88x = 422,223.46
  5. Step 5: Solve for x
    x = 422,223.46/719.88
  6. Step 6: Final answer
    x = 586.52

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