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Finding the Fourth Proportional to 246.65, 340.28 and 141.72

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Solution

The fourth proportional to 246.65, 340.28 and 141.72 is: 195.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.65 : 340.28 = 141.72 : x
  2. Step 2: Convert to fraction form
    246.65/340.28 = 141.72/x
  3. Step 3: Cross multiply
    246.65x = 340.28 × 141.72
  4. Step 4: Simplify right side
    246.65x = 48,223.62
  5. Step 5: Solve for x
    x = 48,223.62/246.65
  6. Step 6: Final answer
    x = 195.51

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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.