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Finding the Fourth Proportional to 1,035.84, 1,553.87 and 515.97

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Solution

The fourth proportional to 1,035.84, 1,553.87 and 515.97 is: 774.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.84 : 1,553.87 = 515.97 : x
  2. Step 2: Convert to fraction form
    1,035.84/1,553.87 = 515.97/x
  3. Step 3: Cross multiply
    1,035.84x = 1,553.87 × 515.97
  4. Step 4: Simplify right side
    1,035.84x = 801,750.30
  5. Step 5: Solve for x
    x = 801,750.30/1,035.84
  6. Step 6: Final answer
    x = 774.01

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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.