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Finding the Fourth Proportional to 361.08, 498.02 and 243.18

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Solution

The fourth proportional to 361.08, 498.02 and 243.18 is: 335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.08 : 498.02 = 243.18 : x
  2. Step 2: Convert to fraction form
    361.08/498.02 = 243.18/x
  3. Step 3: Cross multiply
    361.08x = 498.02 × 243.18
  4. Step 4: Simplify right side
    361.08x = 121,107.29
  5. Step 5: Solve for x
    x = 121,107.29/361.08
  6. Step 6: Final answer
    x = 335.40

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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.