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Finding the Fourth Proportional to 400.75, 553.40 and 294.91

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Solution

The fourth proportional to 400.75, 553.40 and 294.91 is: 407.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.75 : 553.40 = 294.91 : x
  2. Step 2: Convert to fraction form
    400.75/553.40 = 294.91/x
  3. Step 3: Cross multiply
    400.75x = 553.40 × 294.91
  4. Step 4: Simplify right side
    400.75x = 163,201.16
  5. Step 5: Solve for x
    x = 163,201.16/400.75
  6. Step 6: Final answer
    x = 407.24

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