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Finding the Fourth Proportional to 683.37, 936.90 and 671.09

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Solution

The fourth proportional to 683.37, 936.90 and 671.09 is: 920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.37 : 936.90 = 671.09 : x
  2. Step 2: Convert to fraction form
    683.37/936.90 = 671.09/x
  3. Step 3: Cross multiply
    683.37x = 936.90 × 671.09
  4. Step 4: Simplify right side
    683.37x = 628,739.54
  5. Step 5: Solve for x
    x = 628,739.54/683.37
  6. Step 6: Final answer
    x = 920.06

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Half scale
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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.