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Finding the Fourth Proportional to 243.89, 336.74 and 170.18

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Solution

The fourth proportional to 243.89, 336.74 and 170.18 is: 234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.89 : 336.74 = 170.18 : x
  2. Step 2: Convert to fraction form
    243.89/336.74 = 170.18/x
  3. Step 3: Cross multiply
    243.89x = 336.74 × 170.18
  4. Step 4: Simplify right side
    243.89x = 57,306.41
  5. Step 5: Solve for x
    x = 57,306.41/243.89
  6. Step 6: Final answer
    x = 234.97

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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.