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Finding the Fourth Proportional to 246.97, 340.69 and 153.56

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Solution

The fourth proportional to 246.97, 340.69 and 153.56 is: 211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.97 : 340.69 = 153.56 : x
  2. Step 2: Convert to fraction form
    246.97/340.69 = 153.56/x
  3. Step 3: Cross multiply
    246.97x = 340.69 × 153.56
  4. Step 4: Simplify right side
    246.97x = 52,318.48
  5. Step 5: Solve for x
    x = 52,318.48/246.97
  6. Step 6: Final answer
    x = 211.84

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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.