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Finding the Fourth Proportional to 886.46, 1,220.06 and 676.26

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Solution

The fourth proportional to 886.46, 1,220.06 and 676.26 is: 930.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.46 : 1,220.06 = 676.26 : x
  2. Step 2: Convert to fraction form
    886.46/1,220.06 = 676.26/x
  3. Step 3: Cross multiply
    886.46x = 1,220.06 × 676.26
  4. Step 4: Simplify right side
    886.46x = 825,079.47
  5. Step 5: Solve for x
    x = 825,079.47/886.46
  6. Step 6: Final answer
    x = 930.76

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Double scale
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1.5x scale

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.