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Finding the Fourth Proportional to 798.70, 1,196.56 and 694.76

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Solution

The fourth proportional to 798.70, 1,196.56 and 694.76 is: 1,040.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.70 : 1,196.56 = 694.76 : x
  2. Step 2: Convert to fraction form
    798.70/1,196.56 = 694.76/x
  3. Step 3: Cross multiply
    798.70x = 1,196.56 × 694.76
  4. Step 4: Simplify right side
    798.70x = 831,322.03
  5. Step 5: Solve for x
    x = 831,322.03/798.70
  6. Step 6: Final answer
    x = 1,040.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.