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Finding the Fourth Proportional to 685.43, 937.73 and 682.49

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Solution

The fourth proportional to 685.43, 937.73 and 682.49 is: 933.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.43 : 937.73 = 682.49 : x
  2. Step 2: Convert to fraction form
    685.43/937.73 = 682.49/x
  3. Step 3: Cross multiply
    685.43x = 937.73 × 682.49
  4. Step 4: Simplify right side
    685.43x = 639,995.40
  5. Step 5: Solve for x
    x = 639,995.40/685.43
  6. Step 6: Final answer
    x = 933.72

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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.