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Finding the Fourth Proportional to 1,293.07, 1,783.33 and 873.31

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Solution

The fourth proportional to 1,293.07, 1,783.33 and 873.31 is: 1,204.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.07 : 1,783.33 = 873.31 : x
  2. Step 2: Convert to fraction form
    1,293.07/1,783.33 = 873.31/x
  3. Step 3: Cross multiply
    1,293.07x = 1,783.33 × 873.31
  4. Step 4: Simplify right side
    1,293.07x = 1,557,399.92
  5. Step 5: Solve for x
    x = 1,557,399.92/1,293.07
  6. Step 6: Final answer
    x = 1,204.42

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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.