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Finding the Fourth Proportional to 683.22, 936.71 and 670.93

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Solution

The fourth proportional to 683.22, 936.71 and 670.93 is: 919.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.22 : 936.71 = 670.93 : x
  2. Step 2: Convert to fraction form
    683.22/936.71 = 670.93/x
  3. Step 3: Cross multiply
    683.22x = 936.71 × 670.93
  4. Step 4: Simplify right side
    683.22x = 628,466.84
  5. Step 5: Solve for x
    x = 628,466.84/683.22
  6. Step 6: Final answer
    x = 919.86

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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.