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Finding the Fourth Proportional to 348.56, 481.28 and 230.60

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Solution

The fourth proportional to 348.56, 481.28 and 230.60 is: 318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.56 : 481.28 = 230.60 : x
  2. Step 2: Convert to fraction form
    348.56/481.28 = 230.60/x
  3. Step 3: Cross multiply
    348.56x = 481.28 × 230.60
  4. Step 4: Simplify right side
    348.56x = 110,983.17
  5. Step 5: Solve for x
    x = 110,983.17/348.56
  6. Step 6: Final answer
    x = 318.40

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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.