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Finding the Fourth Proportional to 222.02, 332.79 and 140.91

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Solution

The fourth proportional to 222.02, 332.79 and 140.91 is: 211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.02 : 332.79 = 140.91 : x
  2. Step 2: Convert to fraction form
    222.02/332.79 = 140.91/x
  3. Step 3: Cross multiply
    222.02x = 332.79 × 140.91
  4. Step 4: Simplify right side
    222.02x = 46,893.44
  5. Step 5: Solve for x
    x = 46,893.44/222.02
  6. Step 6: Final answer
    x = 211.21

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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.