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Finding the Fourth Proportional to 174.69, 262.17 and 126.90

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Solution

The fourth proportional to 174.69, 262.17 and 126.90 is: 190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.69 : 262.17 = 126.90 : x
  2. Step 2: Convert to fraction form
    174.69/262.17 = 126.90/x
  3. Step 3: Cross multiply
    174.69x = 262.17 × 126.90
  4. Step 4: Simplify right side
    174.69x = 33,269.37
  5. Step 5: Solve for x
    x = 33,269.37/174.69
  6. Step 6: Final answer
    x = 190.45

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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.