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Finding the Fourth Proportional to 481.37, 724.87 and 345.36

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Solution

The fourth proportional to 481.37, 724.87 and 345.36 is: 520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.37 : 724.87 = 345.36 : x
  2. Step 2: Convert to fraction form
    481.37/724.87 = 345.36/x
  3. Step 3: Cross multiply
    481.37x = 724.87 × 345.36
  4. Step 4: Simplify right side
    481.37x = 250,344.13
  5. Step 5: Solve for x
    x = 250,344.13/481.37
  6. Step 6: Final answer
    x = 520.07

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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.