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Finding the Fourth Proportional to 676.88, 934.12 and 382.18

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Solution

The fourth proportional to 676.88, 934.12 and 382.18 is: 527.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.88 : 934.12 = 382.18 : x
  2. Step 2: Convert to fraction form
    676.88/934.12 = 382.18/x
  3. Step 3: Cross multiply
    676.88x = 934.12 × 382.18
  4. Step 4: Simplify right side
    676.88x = 357,001.98
  5. Step 5: Solve for x
    x = 357,001.98/676.88
  6. Step 6: Final answer
    x = 527.42

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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.