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Finding the Fourth Proportional to 321.13, 481.51 and 167.01

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Solution

The fourth proportional to 321.13, 481.51 and 167.01 is: 250.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.13 : 481.51 = 167.01 : x
  2. Step 2: Convert to fraction form
    321.13/481.51 = 167.01/x
  3. Step 3: Cross multiply
    321.13x = 481.51 × 167.01
  4. Step 4: Simplify right side
    321.13x = 80,416.99
  5. Step 5: Solve for x
    x = 80,416.99/321.13
  6. Step 6: Final answer
    x = 250.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.