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Finding the Fourth Proportional to 505.88, 758.70 and 231.80

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Solution

The fourth proportional to 505.88, 758.70 and 231.80 is: 347.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.88 : 758.70 = 231.80 : x
  2. Step 2: Convert to fraction form
    505.88/758.70 = 231.80/x
  3. Step 3: Cross multiply
    505.88x = 758.70 × 231.80
  4. Step 4: Simplify right side
    505.88x = 175,866.66
  5. Step 5: Solve for x
    x = 175,866.66/505.88
  6. Step 6: Final answer
    x = 347.65

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