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Finding the Fourth Proportional to 305.02, 421.26 and 207.04

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Solution

The fourth proportional to 305.02, 421.26 and 207.04 is: 285.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.02 : 421.26 = 207.04 : x
  2. Step 2: Convert to fraction form
    305.02/421.26 = 207.04/x
  3. Step 3: Cross multiply
    305.02x = 421.26 × 207.04
  4. Step 4: Simplify right side
    305.02x = 87,217.67
  5. Step 5: Solve for x
    x = 87,217.67/305.02
  6. Step 6: Final answer
    x = 285.94

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