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Finding the Fourth Proportional to 361.16, 541.69 and 126.89

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Solution

The fourth proportional to 361.16, 541.69 and 126.89 is: 190.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.16 : 541.69 = 126.89 : x
  2. Step 2: Convert to fraction form
    361.16/541.69 = 126.89/x
  3. Step 3: Cross multiply
    361.16x = 541.69 × 126.89
  4. Step 4: Simplify right side
    361.16x = 68,734.53
  5. Step 5: Solve for x
    x = 68,734.53/361.16
  6. Step 6: Final answer
    x = 190.32

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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.