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Finding the Fourth Proportional to 246.72, 340.45 and 141.79

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Solution

The fourth proportional to 246.72, 340.45 and 141.79 is: 195.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.72 : 340.45 = 141.79 : x
  2. Step 2: Convert to fraction form
    246.72/340.45 = 141.79/x
  3. Step 3: Cross multiply
    246.72x = 340.45 × 141.79
  4. Step 4: Simplify right side
    246.72x = 48,271.56
  5. Step 5: Solve for x
    x = 48,271.56/246.72
  6. Step 6: Final answer
    x = 195.66

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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.