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Finding the Fourth Proportional to 466.29, 642.47 and 310.77

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Solution

The fourth proportional to 466.29, 642.47 and 310.77 is: 428.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.29 : 642.47 = 310.77 : x
  2. Step 2: Convert to fraction form
    466.29/642.47 = 310.77/x
  3. Step 3: Cross multiply
    466.29x = 642.47 × 310.77
  4. Step 4: Simplify right side
    466.29x = 199,658.85
  5. Step 5: Solve for x
    x = 199,658.85/466.29
  6. Step 6: Final answer
    x = 428.19

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