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Finding the Fourth Proportional to 676.33, 1,016.12 and 433.33

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Solution

The fourth proportional to 676.33, 1,016.12 and 433.33 is: 651.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.33 : 1,016.12 = 433.33 : x
  2. Step 2: Convert to fraction form
    676.33/1,016.12 = 433.33/x
  3. Step 3: Cross multiply
    676.33x = 1,016.12 × 433.33
  4. Step 4: Simplify right side
    676.33x = 440,317.28
  5. Step 5: Solve for x
    x = 440,317.28/676.33
  6. Step 6: Final answer
    x = 651.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.