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Finding the Fourth Proportional to 361.11, 498.36 and 213.76

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Solution

The fourth proportional to 361.11, 498.36 and 213.76 is: 295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.11 : 498.36 = 213.76 : x
  2. Step 2: Convert to fraction form
    361.11/498.36 = 213.76/x
  3. Step 3: Cross multiply
    361.11x = 498.36 × 213.76
  4. Step 4: Simplify right side
    361.11x = 106,529.43
  5. Step 5: Solve for x
    x = 106,529.43/361.11
  6. Step 6: Final answer
    x = 295.01

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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.