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Finding the Fourth Proportional to 246.56, 340.22 and 140.20

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Solution

The fourth proportional to 246.56, 340.22 and 140.20 is: 193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.56 : 340.22 = 140.20 : x
  2. Step 2: Convert to fraction form
    246.56/340.22 = 140.20/x
  3. Step 3: Cross multiply
    246.56x = 340.22 × 140.20
  4. Step 4: Simplify right side
    246.56x = 47,698.84
  5. Step 5: Solve for x
    x = 47,698.84/246.56
  6. Step 6: Final answer
    x = 193.46

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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.