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Finding the Fourth Proportional to 1,273.23, 1,757.03 and 713.72

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Solution

The fourth proportional to 1,273.23, 1,757.03 and 713.72 is: 984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.23 : 1,757.03 = 713.72 : x
  2. Step 2: Convert to fraction form
    1,273.23/1,757.03 = 713.72/x
  3. Step 3: Cross multiply
    1,273.23x = 1,757.03 × 713.72
  4. Step 4: Simplify right side
    1,273.23x = 1,254,015.10
  5. Step 5: Solve for x
    x = 1,254,015.10/1,273.23
  6. Step 6: Final answer
    x = 984.91

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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.