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Finding the Fourth Proportional to 481.29, 719.19 and 361.78

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Solution

The fourth proportional to 481.29, 719.19 and 361.78 is: 540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.29 : 719.19 = 361.78 : x
  2. Step 2: Convert to fraction form
    481.29/719.19 = 361.78/x
  3. Step 3: Cross multiply
    481.29x = 719.19 × 361.78
  4. Step 4: Simplify right side
    481.29x = 260,188.56
  5. Step 5: Solve for x
    x = 260,188.56/481.29
  6. Step 6: Final answer
    x = 540.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.