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Finding the Fourth Proportional to 881.72, 1,322.58 and 539.96

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Solution

The fourth proportional to 881.72, 1,322.58 and 539.96 is: 809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.72 : 1,322.58 = 539.96 : x
  2. Step 2: Convert to fraction form
    881.72/1,322.58 = 539.96/x
  3. Step 3: Cross multiply
    881.72x = 1,322.58 × 539.96
  4. Step 4: Simplify right side
    881.72x = 714,140.30
  5. Step 5: Solve for x
    x = 714,140.30/881.72
  6. Step 6: Final answer
    x = 809.94

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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.