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Finding the Fourth Proportional to 847.56, 1,169.52 and 493.46

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Solution

The fourth proportional to 847.56, 1,169.52 and 493.46 is: 680.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.56 : 1,169.52 = 493.46 : x
  2. Step 2: Convert to fraction form
    847.56/1,169.52 = 493.46/x
  3. Step 3: Cross multiply
    847.56x = 1,169.52 × 493.46
  4. Step 4: Simplify right side
    847.56x = 577,110.80
  5. Step 5: Solve for x
    x = 577,110.80/847.56
  6. Step 6: Final answer
    x = 680.91

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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.