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Finding the Fourth Proportional to 361.48, 544.85 and 330.80

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Solution

The fourth proportional to 361.48, 544.85 and 330.80 is: 498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.48 : 544.85 = 330.80 : x
  2. Step 2: Convert to fraction form
    361.48/544.85 = 330.80/x
  3. Step 3: Cross multiply
    361.48x = 544.85 × 330.80
  4. Step 4: Simplify right side
    361.48x = 180,236.38
  5. Step 5: Solve for x
    x = 180,236.38/361.48
  6. Step 6: Final answer
    x = 498.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.