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Finding the Fourth Proportional to 1,133.19, 1,699.83 and 516.87

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Solution

The fourth proportional to 1,133.19, 1,699.83 and 516.87 is: 775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.19 : 1,699.83 = 516.87 : x
  2. Step 2: Convert to fraction form
    1,133.19/1,699.83 = 516.87/x
  3. Step 3: Cross multiply
    1,133.19x = 1,699.83 × 516.87
  4. Step 4: Simplify right side
    1,133.19x = 878,591.13
  5. Step 5: Solve for x
    x = 878,591.13/1,133.19
  6. Step 6: Final answer
    x = 775.33

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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.