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Finding the Fourth Proportional to 361.35, 498.66 and 201.81

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Solution

The fourth proportional to 361.35, 498.66 and 201.81 is: 278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.35 : 498.66 = 201.81 : x
  2. Step 2: Convert to fraction form
    361.35/498.66 = 201.81/x
  3. Step 3: Cross multiply
    361.35x = 498.66 × 201.81
  4. Step 4: Simplify right side
    361.35x = 100,634.57
  5. Step 5: Solve for x
    x = 100,634.57/361.35
  6. Step 6: Final answer
    x = 278.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.