Home / 1,116.30-1,540.50-618.97

Finding the Fourth Proportional to 1,116.30, 1,540.50 and 618.97

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Solution

The fourth proportional to 1,116.30, 1,540.50 and 618.97 is: 854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.30 : 1,540.50 = 618.97 : x
  2. Step 2: Convert to fraction form
    1,116.30/1,540.50 = 618.97/x
  3. Step 3: Cross multiply
    1,116.30x = 1,540.50 × 618.97
  4. Step 4: Simplify right side
    1,116.30x = 953,523.29
  5. Step 5: Solve for x
    x = 953,523.29/1,116.30
  6. Step 6: Final answer
    x = 854.18

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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.