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Finding the Fourth Proportional to 243.81, 336.26 and 173.85

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Solution

The fourth proportional to 243.81, 336.26 and 173.85 is: 239.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.81 : 336.26 = 173.85 : x
  2. Step 2: Convert to fraction form
    243.81/336.26 = 173.85/x
  3. Step 3: Cross multiply
    243.81x = 336.26 × 173.85
  4. Step 4: Simplify right side
    243.81x = 58,459.24
  5. Step 5: Solve for x
    x = 58,459.24/243.81
  6. Step 6: Final answer
    x = 239.77

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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.