Home / 1,090.25-1,504.17-618.09

Finding the Fourth Proportional to 1,090.25, 1,504.17 and 618.09

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Solution

The fourth proportional to 1,090.25, 1,504.17 and 618.09 is: 852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.25 : 1,504.17 = 618.09 : x
  2. Step 2: Convert to fraction form
    1,090.25/1,504.17 = 618.09/x
  3. Step 3: Cross multiply
    1,090.25x = 1,504.17 × 618.09
  4. Step 4: Simplify right side
    1,090.25x = 929,712.44
  5. Step 5: Solve for x
    x = 929,712.44/1,090.25
  6. Step 6: Final answer
    x = 852.76

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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.