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Finding the Fourth Proportional to 405.33, 607.98 and 199.83

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Solution

The fourth proportional to 405.33, 607.98 and 199.83 is: 299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.33 : 607.98 = 199.83 : x
  2. Step 2: Convert to fraction form
    405.33/607.98 = 199.83/x
  3. Step 3: Cross multiply
    405.33x = 607.98 × 199.83
  4. Step 4: Simplify right side
    405.33x = 121,492.64
  5. Step 5: Solve for x
    x = 121,492.64/405.33
  6. Step 6: Final answer
    x = 299.74

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