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Finding the Fourth Proportional to 318.86, 480.15 and 232.80

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Solution

The fourth proportional to 318.86, 480.15 and 232.80 is: 350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.86 : 480.15 = 232.80 : x
  2. Step 2: Convert to fraction form
    318.86/480.15 = 232.80/x
  3. Step 3: Cross multiply
    318.86x = 480.15 × 232.80
  4. Step 4: Simplify right side
    318.86x = 111,778.92
  5. Step 5: Solve for x
    x = 111,778.92/318.86
  6. Step 6: Final answer
    x = 350.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.