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Finding the Fourth Proportional to 753.03, 1,040.37 and 712.02

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Solution

The fourth proportional to 753.03, 1,040.37 and 712.02 is: 983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.03 : 1,040.37 = 712.02 : x
  2. Step 2: Convert to fraction form
    753.03/1,040.37 = 712.02/x
  3. Step 3: Cross multiply
    753.03x = 1,040.37 × 712.02
  4. Step 4: Simplify right side
    753.03x = 740,764.25
  5. Step 5: Solve for x
    x = 740,764.25/753.03
  6. Step 6: Final answer
    x = 983.71

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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.