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Finding the Fourth Proportional to 801.96, 1,198.70 and 697.02

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Solution

The fourth proportional to 801.96, 1,198.70 and 697.02 is: 1,041.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.96 : 1,198.70 = 697.02 : x
  2. Step 2: Convert to fraction form
    801.96/1,198.70 = 697.02/x
  3. Step 3: Cross multiply
    801.96x = 1,198.70 × 697.02
  4. Step 4: Simplify right side
    801.96x = 835,516.13
  5. Step 5: Solve for x
    x = 835,516.13/801.96
  6. Step 6: Final answer
    x = 1,041.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.