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Finding the Fourth Proportional to 149.46, 207.30 and 144

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Solution

The fourth proportional to 149.46, 207.30 and 144 is: 199.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.46 : 207.30 = 144 : x
  2. Step 2: Convert to fraction form
    149.46/207.30 = 144/x
  3. Step 3: Cross multiply
    149.46x = 207.30 × 144
  4. Step 4: Simplify right side
    149.46x = 29,851.20
  5. Step 5: Solve for x
    x = 29,851.20/149.46
  6. Step 6: Final answer
    x = 199.73

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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.