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Finding the Fourth Proportional to 246.42, 337.89 and 221.76

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Solution

The fourth proportional to 246.42, 337.89 and 221.76 is: 304.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.42 : 337.89 = 221.76 : x
  2. Step 2: Convert to fraction form
    246.42/337.89 = 221.76/x
  3. Step 3: Cross multiply
    246.42x = 337.89 × 221.76
  4. Step 4: Simplify right side
    246.42x = 74,930.49
  5. Step 5: Solve for x
    x = 74,930.49/246.42
  6. Step 6: Final answer
    x = 304.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.