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Finding the Fourth Proportional to 683.60, 943.56 and 659.60

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Solution

The fourth proportional to 683.60, 943.56 and 659.60 is: 910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.60 : 943.56 = 659.60 : x
  2. Step 2: Convert to fraction form
    683.60/943.56 = 659.60/x
  3. Step 3: Cross multiply
    683.60x = 943.56 × 659.60
  4. Step 4: Simplify right side
    683.60x = 622,372.18
  5. Step 5: Solve for x
    x = 622,372.18/683.60
  6. Step 6: Final answer
    x = 910.43

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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.