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Finding the Fourth Proportional to 881.22, 1,323.70 and 556.82

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Solution

The fourth proportional to 881.22, 1,323.70 and 556.82 is: 836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.22 : 1,323.70 = 556.82 : x
  2. Step 2: Convert to fraction form
    881.22/1,323.70 = 556.82/x
  3. Step 3: Cross multiply
    881.22x = 1,323.70 × 556.82
  4. Step 4: Simplify right side
    881.22x = 737,062.63
  5. Step 5: Solve for x
    x = 737,062.63/881.22
  6. Step 6: Final answer
    x = 836.41

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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.