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Finding the Fourth Proportional to 455.03, 627.75 and 289.33

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Solution

The fourth proportional to 455.03, 627.75 and 289.33 is: 399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.03 : 627.75 = 289.33 : x
  2. Step 2: Convert to fraction form
    455.03/627.75 = 289.33/x
  3. Step 3: Cross multiply
    455.03x = 627.75 × 289.33
  4. Step 4: Simplify right side
    455.03x = 181,623.77
  5. Step 5: Solve for x
    x = 181,623.77/455.03
  6. Step 6: Final answer
    x = 399.15

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