Home / 1,645.05-2,270.19-899.04

Finding the Fourth Proportional to 1,645.05, 2,270.19 and 899.04

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Solution

The fourth proportional to 1,645.05, 2,270.19 and 899.04 is: 1,240.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.05 : 2,270.19 = 899.04 : x
  2. Step 2: Convert to fraction form
    1,645.05/2,270.19 = 899.04/x
  3. Step 3: Cross multiply
    1,645.05x = 2,270.19 × 899.04
  4. Step 4: Simplify right side
    1,645.05x = 2,040,991.62
  5. Step 5: Solve for x
    x = 2,040,991.62/1,645.05
  6. Step 6: Final answer
    x = 1,240.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.