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Finding the Fourth Proportional to 361.52, 498.88 and 219.76

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Solution

The fourth proportional to 361.52, 498.88 and 219.76 is: 303.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.52 : 498.88 = 219.76 : x
  2. Step 2: Convert to fraction form
    361.52/498.88 = 219.76/x
  3. Step 3: Cross multiply
    361.52x = 498.88 × 219.76
  4. Step 4: Simplify right side
    361.52x = 109,633.87
  5. Step 5: Solve for x
    x = 109,633.87/361.52
  6. Step 6: Final answer
    x = 303.26

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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.