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Finding the Fourth Proportional to 388.74, 581.74 and 234.56

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Solution

The fourth proportional to 388.74, 581.74 and 234.56 is: 351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.74 : 581.74 = 234.56 : x
  2. Step 2: Convert to fraction form
    388.74/581.74 = 234.56/x
  3. Step 3: Cross multiply
    388.74x = 581.74 × 234.56
  4. Step 4: Simplify right side
    388.74x = 136,452.93
  5. Step 5: Solve for x
    x = 136,452.93/388.74
  6. Step 6: Final answer
    x = 351.01

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