Home / 1,028.45-1,418.31-654.77

Finding the Fourth Proportional to 1,028.45, 1,418.31 and 654.77

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Solution

The fourth proportional to 1,028.45, 1,418.31 and 654.77 is: 902.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.45 : 1,418.31 = 654.77 : x
  2. Step 2: Convert to fraction form
    1,028.45/1,418.31 = 654.77/x
  3. Step 3: Cross multiply
    1,028.45x = 1,418.31 × 654.77
  4. Step 4: Simplify right side
    1,028.45x = 928,666.84
  5. Step 5: Solve for x
    x = 928,666.84/1,028.45
  6. Step 6: Final answer
    x = 902.98

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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.