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Finding the Fourth Proportional to 389.24, 583.86 and 115.33

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Solution

The fourth proportional to 389.24, 583.86 and 115.33 is: 173.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.24 : 583.86 = 115.33 : x
  2. Step 2: Convert to fraction form
    389.24/583.86 = 115.33/x
  3. Step 3: Cross multiply
    389.24x = 583.86 × 115.33
  4. Step 4: Simplify right side
    389.24x = 67,336.45
  5. Step 5: Solve for x
    x = 67,336.45/389.24
  6. Step 6: Final answer
    x = 173.00

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