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Finding the Fourth Proportional to 993.03, 1,371.42 and 753.36

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Solution

The fourth proportional to 993.03, 1,371.42 and 753.36 is: 1,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.03 : 1,371.42 = 753.36 : x
  2. Step 2: Convert to fraction form
    993.03/1,371.42 = 753.36/x
  3. Step 3: Cross multiply
    993.03x = 1,371.42 × 753.36
  4. Step 4: Simplify right side
    993.03x = 1,033,172.97
  5. Step 5: Solve for x
    x = 1,033,172.97/993.03
  6. Step 6: Final answer
    x = 1,040.42

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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.