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Finding the Fourth Proportional to 348.80, 481.20 and 232.16

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Solution

The fourth proportional to 348.80, 481.20 and 232.16 is: 320.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.80 : 481.20 = 232.16 : x
  2. Step 2: Convert to fraction form
    348.80/481.20 = 232.16/x
  3. Step 3: Cross multiply
    348.80x = 481.20 × 232.16
  4. Step 4: Simplify right side
    348.80x = 111,715.39
  5. Step 5: Solve for x
    x = 111,715.39/348.80
  6. Step 6: Final answer
    x = 320.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.