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Finding the Fourth Proportional to 506.58, 758.87 and 320.91

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Solution

The fourth proportional to 506.58, 758.87 and 320.91 is: 480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.58 : 758.87 = 320.91 : x
  2. Step 2: Convert to fraction form
    506.58/758.87 = 320.91/x
  3. Step 3: Cross multiply
    506.58x = 758.87 × 320.91
  4. Step 4: Simplify right side
    506.58x = 243,528.97
  5. Step 5: Solve for x
    x = 243,528.97/506.58
  6. Step 6: Final answer
    x = 480.73

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