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Finding the Fourth Proportional to 150.08, 225.34 and 128.38

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Solution

The fourth proportional to 150.08, 225.34 and 128.38 is: 192.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.08 : 225.34 = 128.38 : x
  2. Step 2: Convert to fraction form
    150.08/225.34 = 128.38/x
  3. Step 3: Cross multiply
    150.08x = 225.34 × 128.38
  4. Step 4: Simplify right side
    150.08x = 28,929.15
  5. Step 5: Solve for x
    x = 28,929.15/150.08
  6. Step 6: Final answer
    x = 192.76

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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.