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Finding the Fourth Proportional to 147.05, 201.61 and 144.45

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Solution

The fourth proportional to 147.05, 201.61 and 144.45 is: 198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.05 : 201.61 = 144.45 : x
  2. Step 2: Convert to fraction form
    147.05/201.61 = 144.45/x
  3. Step 3: Cross multiply
    147.05x = 201.61 × 144.45
  4. Step 4: Simplify right side
    147.05x = 29,122.56
  5. Step 5: Solve for x
    x = 29,122.56/147.05
  6. Step 6: Final answer
    x = 198.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.