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Finding the Fourth Proportional to 683.29, 936.83 and 670.96

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Solution

The fourth proportional to 683.29, 936.83 and 670.96 is: 919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.29 : 936.83 = 670.96 : x
  2. Step 2: Convert to fraction form
    683.29/936.83 = 670.96/x
  3. Step 3: Cross multiply
    683.29x = 936.83 × 670.96
  4. Step 4: Simplify right side
    683.29x = 628,575.46
  5. Step 5: Solve for x
    x = 628,575.46/683.29
  6. Step 6: Final answer
    x = 919.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.