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Finding the Fourth Proportional to 701.60, 968.28 and 679.76

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Solution

The fourth proportional to 701.60, 968.28 and 679.76 is: 938.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.60 : 968.28 = 679.76 : x
  2. Step 2: Convert to fraction form
    701.60/968.28 = 679.76/x
  3. Step 3: Cross multiply
    701.60x = 968.28 × 679.76
  4. Step 4: Simplify right side
    701.60x = 658,198.01
  5. Step 5: Solve for x
    x = 658,198.01/701.60
  6. Step 6: Final answer
    x = 938.14

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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.