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Finding the Fourth Proportional to 361.69, 541.72 and 253.96

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Solution

The fourth proportional to 361.69, 541.72 and 253.96 is: 380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.69 : 541.72 = 253.96 : x
  2. Step 2: Convert to fraction form
    361.69/541.72 = 253.96/x
  3. Step 3: Cross multiply
    361.69x = 541.72 × 253.96
  4. Step 4: Simplify right side
    361.69x = 137,571.23
  5. Step 5: Solve for x
    x = 137,571.23/361.69
  6. Step 6: Final answer
    x = 380.36

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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.