Home / 1,028.11-1,418.94-655.25

Finding the Fourth Proportional to 1,028.11, 1,418.94 and 655.25

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Solution

The fourth proportional to 1,028.11, 1,418.94 and 655.25 is: 904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.11 : 1,418.94 = 655.25 : x
  2. Step 2: Convert to fraction form
    1,028.11/1,418.94 = 655.25/x
  3. Step 3: Cross multiply
    1,028.11x = 1,418.94 × 655.25
  4. Step 4: Simplify right side
    1,028.11x = 929,760.44
  5. Step 5: Solve for x
    x = 929,760.44/1,028.11
  6. Step 6: Final answer
    x = 904.34

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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.