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Finding the Fourth Proportional to 246.91, 340.74 and 136.39

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Solution

The fourth proportional to 246.91, 340.74 and 136.39 is: 188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.91 : 340.74 = 136.39 : x
  2. Step 2: Convert to fraction form
    246.91/340.74 = 136.39/x
  3. Step 3: Cross multiply
    246.91x = 340.74 × 136.39
  4. Step 4: Simplify right side
    246.91x = 46,475.14
  5. Step 5: Solve for x
    x = 46,475.14/246.91
  6. Step 6: Final answer
    x = 188.23

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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.