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Finding the Fourth Proportional to 321.01, 481.13 and 135.84

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Solution

The fourth proportional to 321.01, 481.13 and 135.84 is: 203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.01 : 481.13 = 135.84 : x
  2. Step 2: Convert to fraction form
    321.01/481.13 = 135.84/x
  3. Step 3: Cross multiply
    321.01x = 481.13 × 135.84
  4. Step 4: Simplify right side
    321.01x = 65,356.02
  5. Step 5: Solve for x
    x = 65,356.02/321.01
  6. Step 6: Final answer
    x = 203.60

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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.