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Finding the Fourth Proportional to 698.02, 960.61 and 679.94

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Solution

The fourth proportional to 698.02, 960.61 and 679.94 is: 935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.02 : 960.61 = 679.94 : x
  2. Step 2: Convert to fraction form
    698.02/960.61 = 679.94/x
  3. Step 3: Cross multiply
    698.02x = 960.61 × 679.94
  4. Step 4: Simplify right side
    698.02x = 653,160.94
  5. Step 5: Solve for x
    x = 653,160.94/698.02
  6. Step 6: Final answer
    x = 935.74

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