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Finding the Fourth Proportional to 676.13, 1,013.22 and 546.44

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Solution

The fourth proportional to 676.13, 1,013.22 and 546.44 is: 818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.13 : 1,013.22 = 546.44 : x
  2. Step 2: Convert to fraction form
    676.13/1,013.22 = 546.44/x
  3. Step 3: Cross multiply
    676.13x = 1,013.22 × 546.44
  4. Step 4: Simplify right side
    676.13x = 553,658.87
  5. Step 5: Solve for x
    x = 553,658.87/676.13
  6. Step 6: Final answer
    x = 818.87

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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.