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Finding the Fourth Proportional to 1,083.33, 1,495.04 and 611.21

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Solution

The fourth proportional to 1,083.33, 1,495.04 and 611.21 is: 843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.33 : 1,495.04 = 611.21 : x
  2. Step 2: Convert to fraction form
    1,083.33/1,495.04 = 611.21/x
  3. Step 3: Cross multiply
    1,083.33x = 1,495.04 × 611.21
  4. Step 4: Simplify right side
    1,083.33x = 913,783.40
  5. Step 5: Solve for x
    x = 913,783.40/1,083.33
  6. Step 6: Final answer
    x = 843.49

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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.