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Finding the Fourth Proportional to 246.72, 369.22 and 143.85

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Solution

The fourth proportional to 246.72, 369.22 and 143.85 is: 215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.72 : 369.22 = 143.85 : x
  2. Step 2: Convert to fraction form
    246.72/369.22 = 143.85/x
  3. Step 3: Cross multiply
    246.72x = 369.22 × 143.85
  4. Step 4: Simplify right side
    246.72x = 53,112.30
  5. Step 5: Solve for x
    x = 53,112.30/246.72
  6. Step 6: Final answer
    x = 215.27

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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.