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Finding the Fourth Proportional to 321.35, 443.46 and 173.98

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Solution

The fourth proportional to 321.35, 443.46 and 173.98 is: 240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.35 : 443.46 = 173.98 : x
  2. Step 2: Convert to fraction form
    321.35/443.46 = 173.98/x
  3. Step 3: Cross multiply
    321.35x = 443.46 × 173.98
  4. Step 4: Simplify right side
    321.35x = 77,155.27
  5. Step 5: Solve for x
    x = 77,155.27/321.35
  6. Step 6: Final answer
    x = 240.10

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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.