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Finding the Fourth Proportional to 1,083.29, 1,624.94 and 868.24

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Solution

The fourth proportional to 1,083.29, 1,624.94 and 868.24 is: 1,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.29 : 1,624.94 = 868.24 : x
  2. Step 2: Convert to fraction form
    1,083.29/1,624.94 = 868.24/x
  3. Step 3: Cross multiply
    1,083.29x = 1,624.94 × 868.24
  4. Step 4: Simplify right side
    1,083.29x = 1,410,836.01
  5. Step 5: Solve for x
    x = 1,410,836.01/1,083.29
  6. Step 6: Final answer
    x = 1,302.36

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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.