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Finding the Fourth Proportional to 361.59, 498.99 and 195.80

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Solution

The fourth proportional to 361.59, 498.99 and 195.80 is: 270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.59 : 498.99 = 195.80 : x
  2. Step 2: Convert to fraction form
    361.59/498.99 = 195.80/x
  3. Step 3: Cross multiply
    361.59x = 498.99 × 195.80
  4. Step 4: Simplify right side
    361.59x = 97,702.88
  5. Step 5: Solve for x
    x = 97,702.88/361.59
  6. Step 6: Final answer
    x = 270.21

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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.