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Finding the Fourth Proportional to 241.27, 361.81 and 87.15

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Solution

The fourth proportional to 241.27, 361.81 and 87.15 is: 130.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.27 : 361.81 = 87.15 : x
  2. Step 2: Convert to fraction form
    241.27/361.81 = 87.15/x
  3. Step 3: Cross multiply
    241.27x = 361.81 × 87.15
  4. Step 4: Simplify right side
    241.27x = 31,532.21
  5. Step 5: Solve for x
    x = 31,532.21/241.27
  6. Step 6: Final answer
    x = 130.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.