Home / 1,035.10-1,553.19-669.79

Finding the Fourth Proportional to 1,035.10, 1,553.19 and 669.79

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Solution

The fourth proportional to 1,035.10, 1,553.19 and 669.79 is: 1,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.10 : 1,553.19 = 669.79 : x
  2. Step 2: Convert to fraction form
    1,035.10/1,553.19 = 669.79/x
  3. Step 3: Cross multiply
    1,035.10x = 1,553.19 × 669.79
  4. Step 4: Simplify right side
    1,035.10x = 1,040,311.13
  5. Step 5: Solve for x
    x = 1,040,311.13/1,035.10
  6. Step 6: Final answer
    x = 1,005.03

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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.