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Finding the Fourth Proportional to 348.74, 481.12 and 243.64

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Solution

The fourth proportional to 348.74, 481.12 and 243.64 is: 336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.74 : 481.12 = 243.64 : x
  2. Step 2: Convert to fraction form
    348.74/481.12 = 243.64/x
  3. Step 3: Cross multiply
    348.74x = 481.12 × 243.64
  4. Step 4: Simplify right side
    348.74x = 117,220.08
  5. Step 5: Solve for x
    x = 117,220.08/348.74
  6. Step 6: Final answer
    x = 336.12

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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.