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Finding the Fourth Proportional to 458.18, 632.06 and 310.90

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Solution

The fourth proportional to 458.18, 632.06 and 310.90 is: 428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.18 : 632.06 = 310.90 : x
  2. Step 2: Convert to fraction form
    458.18/632.06 = 310.90/x
  3. Step 3: Cross multiply
    458.18x = 632.06 × 310.90
  4. Step 4: Simplify right side
    458.18x = 196,507.45
  5. Step 5: Solve for x
    x = 196,507.45/458.18
  6. Step 6: Final answer
    x = 428.89

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