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Finding the Fourth Proportional to 246.48, 339.55 and 172.66

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Solution

The fourth proportional to 246.48, 339.55 and 172.66 is: 237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.48 : 339.55 = 172.66 : x
  2. Step 2: Convert to fraction form
    246.48/339.55 = 172.66/x
  3. Step 3: Cross multiply
    246.48x = 339.55 × 172.66
  4. Step 4: Simplify right side
    246.48x = 58,626.70
  5. Step 5: Solve for x
    x = 58,626.70/246.48
  6. Step 6: Final answer
    x = 237.86

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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.