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Finding the Fourth Proportional to 297.79, 411.02 and 173.46

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Solution

The fourth proportional to 297.79, 411.02 and 173.46 is: 239.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.79 : 411.02 = 173.46 : x
  2. Step 2: Convert to fraction form
    297.79/411.02 = 173.46/x
  3. Step 3: Cross multiply
    297.79x = 411.02 × 173.46
  4. Step 4: Simplify right side
    297.79x = 71,295.52
  5. Step 5: Solve for x
    x = 71,295.52/297.79
  6. Step 6: Final answer
    x = 239.41

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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.