Home / 1,116.20-1,673.16-422.44

Finding the Fourth Proportional to 1,116.20, 1,673.16 and 422.44

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Solution

The fourth proportional to 1,116.20, 1,673.16 and 422.44 is: 633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.20 : 1,673.16 = 422.44 : x
  2. Step 2: Convert to fraction form
    1,116.20/1,673.16 = 422.44/x
  3. Step 3: Cross multiply
    1,116.20x = 1,673.16 × 422.44
  4. Step 4: Simplify right side
    1,116.20x = 706,809.71
  5. Step 5: Solve for x
    x = 706,809.71/1,116.20
  6. Step 6: Final answer
    x = 633.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.