Home / 1,028.14-1,419.30-655.63

Finding the Fourth Proportional to 1,028.14, 1,419.30 and 655.63

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Solution

The fourth proportional to 1,028.14, 1,419.30 and 655.63 is: 905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.14 : 1,419.30 = 655.63 : x
  2. Step 2: Convert to fraction form
    1,028.14/1,419.30 = 655.63/x
  3. Step 3: Cross multiply
    1,028.14x = 1,419.30 × 655.63
  4. Step 4: Simplify right side
    1,028.14x = 930,525.28
  5. Step 5: Solve for x
    x = 930,525.28/1,028.14
  6. Step 6: Final answer
    x = 905.06

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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.