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Finding the Fourth Proportional to 246.61, 340.31 and 136.08

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Solution

The fourth proportional to 246.61, 340.31 and 136.08 is: 187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.61 : 340.31 = 136.08 : x
  2. Step 2: Convert to fraction form
    246.61/340.31 = 136.08/x
  3. Step 3: Cross multiply
    246.61x = 340.31 × 136.08
  4. Step 4: Simplify right side
    246.61x = 46,309.38
  5. Step 5: Solve for x
    x = 46,309.38/246.61
  6. Step 6: Final answer
    x = 187.78

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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.