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Finding the Fourth Proportional to 453.79, 680.93 and 338.47

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Solution

The fourth proportional to 453.79, 680.93 and 338.47 is: 507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.79 : 680.93 = 338.47 : x
  2. Step 2: Convert to fraction form
    453.79/680.93 = 338.47/x
  3. Step 3: Cross multiply
    453.79x = 680.93 × 338.47
  4. Step 4: Simplify right side
    453.79x = 230,474.38
  5. Step 5: Solve for x
    x = 230,474.38/453.79
  6. Step 6: Final answer
    x = 507.89

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