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Finding the Fourth Proportional to 676.74, 934.02 and 645.96

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Solution

The fourth proportional to 676.74, 934.02 and 645.96 is: 891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.74 : 934.02 = 645.96 : x
  2. Step 2: Convert to fraction form
    676.74/934.02 = 645.96/x
  3. Step 3: Cross multiply
    676.74x = 934.02 × 645.96
  4. Step 4: Simplify right side
    676.74x = 603,339.56
  5. Step 5: Solve for x
    x = 603,339.56/676.74
  6. Step 6: Final answer
    x = 891.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.