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Finding the Fourth Proportional to 149.82, 225.18 and 147.70

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Solution

The fourth proportional to 149.82, 225.18 and 147.70 is: 221.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.82 : 225.18 = 147.70 : x
  2. Step 2: Convert to fraction form
    149.82/225.18 = 147.70/x
  3. Step 3: Cross multiply
    149.82x = 225.18 × 147.70
  4. Step 4: Simplify right side
    149.82x = 33,259.09
  5. Step 5: Solve for x
    x = 33,259.09/149.82
  6. Step 6: Final answer
    x = 221.99

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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.