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Finding the Fourth Proportional to 150.86, 225.43 and 126.56

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Solution

The fourth proportional to 150.86, 225.43 and 126.56 is: 189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.86 : 225.43 = 126.56 : x
  2. Step 2: Convert to fraction form
    150.86/225.43 = 126.56/x
  3. Step 3: Cross multiply
    150.86x = 225.43 × 126.56
  4. Step 4: Simplify right side
    150.86x = 28,531.38
  5. Step 5: Solve for x
    x = 28,531.38/150.86
  6. Step 6: Final answer
    x = 189.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.