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Finding the Fourth Proportional to 246.89, 340.66 and 153.61

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Solution

The fourth proportional to 246.89, 340.66 and 153.61 is: 211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.89 : 340.66 = 153.61 : x
  2. Step 2: Convert to fraction form
    246.89/340.66 = 153.61/x
  3. Step 3: Cross multiply
    246.89x = 340.66 × 153.61
  4. Step 4: Simplify right side
    246.89x = 52,328.78
  5. Step 5: Solve for x
    x = 52,328.78/246.89
  6. Step 6: Final answer
    x = 211.95

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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.