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Finding the Fourth Proportional to 149.37, 207.19 and 144.45

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Solution

The fourth proportional to 149.37, 207.19 and 144.45 is: 200.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.37 : 207.19 = 144.45 : x
  2. Step 2: Convert to fraction form
    149.37/207.19 = 144.45/x
  3. Step 3: Cross multiply
    149.37x = 207.19 × 144.45
  4. Step 4: Simplify right side
    149.37x = 29,928.60
  5. Step 5: Solve for x
    x = 29,928.60/149.37
  6. Step 6: Final answer
    x = 200.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.