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Finding the Fourth Proportional to 481.25, 719.61 and 343.87

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Solution

The fourth proportional to 481.25, 719.61 and 343.87 is: 514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.25 : 719.61 = 343.87 : x
  2. Step 2: Convert to fraction form
    481.25/719.61 = 343.87/x
  3. Step 3: Cross multiply
    481.25x = 719.61 × 343.87
  4. Step 4: Simplify right side
    481.25x = 247,452.29
  5. Step 5: Solve for x
    x = 247,452.29/481.25
  6. Step 6: Final answer
    x = 514.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.