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Finding the Fourth Proportional to 150.32, 225.57 and 54.12

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Solution

The fourth proportional to 150.32, 225.57 and 54.12 is: 81.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.32 : 225.57 = 54.12 : x
  2. Step 2: Convert to fraction form
    150.32/225.57 = 54.12/x
  3. Step 3: Cross multiply
    150.32x = 225.57 × 54.12
  4. Step 4: Simplify right side
    150.32x = 12,207.85
  5. Step 5: Solve for x
    x = 12,207.85/150.32
  6. Step 6: Final answer
    x = 81.21

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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.