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Finding the Fourth Proportional to 683.77, 943.26 and 462.64

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Solution

The fourth proportional to 683.77, 943.26 and 462.64 is: 638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.77 : 943.26 = 462.64 : x
  2. Step 2: Convert to fraction form
    683.77/943.26 = 462.64/x
  3. Step 3: Cross multiply
    683.77x = 943.26 × 462.64
  4. Step 4: Simplify right side
    683.77x = 436,387.49
  5. Step 5: Solve for x
    x = 436,387.49/683.77
  6. Step 6: Final answer
    x = 638.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.