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Finding the Fourth Proportional to 259.08, 388.76 and 156.56

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Solution

The fourth proportional to 259.08, 388.76 and 156.56 is: 234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.08 : 388.76 = 156.56 : x
  2. Step 2: Convert to fraction form
    259.08/388.76 = 156.56/x
  3. Step 3: Cross multiply
    259.08x = 388.76 × 156.56
  4. Step 4: Simplify right side
    259.08x = 60,864.27
  5. Step 5: Solve for x
    x = 60,864.27/259.08
  6. Step 6: Final answer
    x = 234.92

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