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Finding the Fourth Proportional to 697.02, 1,044.45 and 285.81

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Solution

The fourth proportional to 697.02, 1,044.45 and 285.81 is: 428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.02 : 1,044.45 = 285.81 : x
  2. Step 2: Convert to fraction form
    697.02/1,044.45 = 285.81/x
  3. Step 3: Cross multiply
    697.02x = 1,044.45 × 285.81
  4. Step 4: Simplify right side
    697.02x = 298,514.25
  5. Step 5: Solve for x
    x = 298,514.25/697.02
  6. Step 6: Final answer
    x = 428.27

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