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Finding the Fourth Proportional to 389.29, 583.93 and 267.18

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Solution

The fourth proportional to 389.29, 583.93 and 267.18 is: 400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.29 : 583.93 = 267.18 : x
  2. Step 2: Convert to fraction form
    389.29/583.93 = 267.18/x
  3. Step 3: Cross multiply
    389.29x = 583.93 × 267.18
  4. Step 4: Simplify right side
    389.29x = 156,014.42
  5. Step 5: Solve for x
    x = 156,014.42/389.29
  6. Step 6: Final answer
    x = 400.77

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