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Finding the Fourth Proportional to 407.71, 611.04 and 356.11

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Solution

The fourth proportional to 407.71, 611.04 and 356.11 is: 533.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.71 : 611.04 = 356.11 : x
  2. Step 2: Convert to fraction form
    407.71/611.04 = 356.11/x
  3. Step 3: Cross multiply
    407.71x = 611.04 × 356.11
  4. Step 4: Simplify right side
    407.71x = 217,597.45
  5. Step 5: Solve for x
    x = 217,597.45/407.71
  6. Step 6: Final answer
    x = 533.71

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