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Finding the Fourth Proportional to 150.90, 225.72 and 112.50

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Solution

The fourth proportional to 150.90, 225.72 and 112.50 is: 168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.90 : 225.72 = 112.50 : x
  2. Step 2: Convert to fraction form
    150.90/225.72 = 112.50/x
  3. Step 3: Cross multiply
    150.90x = 225.72 × 112.50
  4. Step 4: Simplify right side
    150.90x = 25,393.50
  5. Step 5: Solve for x
    x = 25,393.50/150.90
  6. Step 6: Final answer
    x = 168.28

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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.