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Finding the Fourth Proportional to 361.59, 541.46 and 315.11

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Solution

The fourth proportional to 361.59, 541.46 and 315.11 is: 471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.59 : 541.46 = 315.11 : x
  2. Step 2: Convert to fraction form
    361.59/541.46 = 315.11/x
  3. Step 3: Cross multiply
    361.59x = 541.46 × 315.11
  4. Step 4: Simplify right side
    361.59x = 170,615.18
  5. Step 5: Solve for x
    x = 170,615.18/361.59
  6. Step 6: Final answer
    x = 471.85

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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.