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Finding the Fourth Proportional to 175.10, 241.40 and 122.56

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Solution

The fourth proportional to 175.10, 241.40 and 122.56 is: 168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.10 : 241.40 = 122.56 : x
  2. Step 2: Convert to fraction form
    175.10/241.40 = 122.56/x
  3. Step 3: Cross multiply
    175.10x = 241.40 × 122.56
  4. Step 4: Simplify right side
    175.10x = 29,585.69
  5. Step 5: Solve for x
    x = 29,585.69/175.10
  6. Step 6: Final answer
    x = 168.96

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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.