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Finding the Fourth Proportional to 881.76, 1,322.69 and 333.89

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Solution

The fourth proportional to 881.76, 1,322.69 and 333.89 is: 500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.76 : 1,322.69 = 333.89 : x
  2. Step 2: Convert to fraction form
    881.76/1,322.69 = 333.89/x
  3. Step 3: Cross multiply
    881.76x = 1,322.69 × 333.89
  4. Step 4: Simplify right side
    881.76x = 441,631.29
  5. Step 5: Solve for x
    x = 441,631.29/881.76
  6. Step 6: Final answer
    x = 500.85

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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.