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Finding the Fourth Proportional to 147.96, 222.12 and 147.69

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Solution

The fourth proportional to 147.96, 222.12 and 147.69 is: 221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.96 : 222.12 = 147.69 : x
  2. Step 2: Convert to fraction form
    147.96/222.12 = 147.69/x
  3. Step 3: Cross multiply
    147.96x = 222.12 × 147.69
  4. Step 4: Simplify right side
    147.96x = 32,804.90
  5. Step 5: Solve for x
    x = 32,804.90/147.96
  6. Step 6: Final answer
    x = 221.71

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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.