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Finding the Fourth Proportional to 347.28, 481.38 and 323.52

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Solution

The fourth proportional to 347.28, 481.38 and 323.52 is: 448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.28 : 481.38 = 323.52 : x
  2. Step 2: Convert to fraction form
    347.28/481.38 = 323.52/x
  3. Step 3: Cross multiply
    347.28x = 481.38 × 323.52
  4. Step 4: Simplify right side
    347.28x = 155,736.06
  5. Step 5: Solve for x
    x = 155,736.06/347.28
  6. Step 6: Final answer
    x = 448.45

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.