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Finding the Fourth Proportional to 881.48, 1,321.44 and 333.68

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Solution

The fourth proportional to 881.48, 1,321.44 and 333.68 is: 500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.48 : 1,321.44 = 333.68 : x
  2. Step 2: Convert to fraction form
    881.48/1,321.44 = 333.68/x
  3. Step 3: Cross multiply
    881.48x = 1,321.44 × 333.68
  4. Step 4: Simplify right side
    881.48x = 440,938.10
  5. Step 5: Solve for x
    x = 440,938.10/881.48
  6. Step 6: Final answer
    x = 500.22

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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.