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Finding the Fourth Proportional to 246.77, 340.90 and 194.66

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Solution

The fourth proportional to 246.77, 340.90 and 194.66 is: 268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.77 : 340.90 = 194.66 : x
  2. Step 2: Convert to fraction form
    246.77/340.90 = 194.66/x
  3. Step 3: Cross multiply
    246.77x = 340.90 × 194.66
  4. Step 4: Simplify right side
    246.77x = 66,357.40
  5. Step 5: Solve for x
    x = 66,357.40/246.77
  6. Step 6: Final answer
    x = 268.91

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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.