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Finding the Fourth Proportional to 330.38, 493.94 and 313.77

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Solution

The fourth proportional to 330.38, 493.94 and 313.77 is: 469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.38 : 493.94 = 313.77 : x
  2. Step 2: Convert to fraction form
    330.38/493.94 = 313.77/x
  3. Step 3: Cross multiply
    330.38x = 493.94 × 313.77
  4. Step 4: Simplify right side
    330.38x = 154,981.98
  5. Step 5: Solve for x
    x = 154,981.98/330.38
  6. Step 6: Final answer
    x = 469.11

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