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Finding the Fourth Proportional to 886.29, 1,223.01 and 676.60

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Solution

The fourth proportional to 886.29, 1,223.01 and 676.60 is: 933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.29 : 1,223.01 = 676.60 : x
  2. Step 2: Convert to fraction form
    886.29/1,223.01 = 676.60/x
  3. Step 3: Cross multiply
    886.29x = 1,223.01 × 676.60
  4. Step 4: Simplify right side
    886.29x = 827,488.57
  5. Step 5: Solve for x
    x = 827,488.57/886.29
  6. Step 6: Final answer
    x = 933.65

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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.