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Finding the Fourth Proportional to 886.33, 1,223.12 and 488

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Solution

The fourth proportional to 886.33, 1,223.12 and 488 is: 673.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.33 : 1,223.12 = 488 : x
  2. Step 2: Convert to fraction form
    886.33/1,223.12 = 488/x
  3. Step 3: Cross multiply
    886.33x = 1,223.12 × 488
  4. Step 4: Simplify right side
    886.33x = 596,882.56
  5. Step 5: Solve for x
    x = 596,882.56/886.33
  6. Step 6: Final answer
    x = 673.43

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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.