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Finding the Fourth Proportional to 150.26, 225.38 and 42.05

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Solution

The fourth proportional to 150.26, 225.38 and 42.05 is: 63.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.26 : 225.38 = 42.05 : x
  2. Step 2: Convert to fraction form
    150.26/225.38 = 42.05/x
  3. Step 3: Cross multiply
    150.26x = 225.38 × 42.05
  4. Step 4: Simplify right side
    150.26x = 9,477.90
  5. Step 5: Solve for x
    x = 9,477.90/150.26
  6. Step 6: Final answer
    x = 63.08

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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.