Home / 1,228.19-1,694.51-697.03

Finding the Fourth Proportional to 1,228.19, 1,694.51 and 697.03

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Solution

The fourth proportional to 1,228.19, 1,694.51 and 697.03 is: 961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.19 : 1,694.51 = 697.03 : x
  2. Step 2: Convert to fraction form
    1,228.19/1,694.51 = 697.03/x
  3. Step 3: Cross multiply
    1,228.19x = 1,694.51 × 697.03
  4. Step 4: Simplify right side
    1,228.19x = 1,181,118.33
  5. Step 5: Solve for x
    x = 1,181,118.33/1,228.19
  6. Step 6: Final answer
    x = 961.68

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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.