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Finding the Fourth Proportional to 645.82, 969.25 and 337.94

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Solution

The fourth proportional to 645.82, 969.25 and 337.94 is: 507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.82 : 969.25 = 337.94 : x
  2. Step 2: Convert to fraction form
    645.82/969.25 = 337.94/x
  3. Step 3: Cross multiply
    645.82x = 969.25 × 337.94
  4. Step 4: Simplify right side
    645.82x = 327,546.92
  5. Step 5: Solve for x
    x = 327,546.92/645.82
  6. Step 6: Final answer
    x = 507.18

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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.