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Finding the Fourth Proportional to 842.44, 1,161.84 and 547.60

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Solution

The fourth proportional to 842.44, 1,161.84 and 547.60 is: 755.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.44 : 1,161.84 = 547.60 : x
  2. Step 2: Convert to fraction form
    842.44/1,161.84 = 547.60/x
  3. Step 3: Cross multiply
    842.44x = 1,161.84 × 547.60
  4. Step 4: Simplify right side
    842.44x = 636,223.58
  5. Step 5: Solve for x
    x = 636,223.58/842.44
  6. Step 6: Final answer
    x = 755.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.