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Finding the Fourth Proportional to 246, 339.21 and 202.26

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Solution

The fourth proportional to 246, 339.21 and 202.26 is: 278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    246 : 339.21 = 202.26 : x
  2. Step 2: Convert to fraction form
    246/339.21 = 202.26/x
  3. Step 3: Cross multiply
    246x = 339.21 × 202.26
  4. Step 4: Simplify right side
    246x = 68,608.61
  5. Step 5: Solve for x
    x = 68,608.61/246
  6. Step 6: Final answer
    x = 278.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.