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Finding the Fourth Proportional to 994.03, 1,372.01 and 699.40

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Solution

The fourth proportional to 994.03, 1,372.01 and 699.40 is: 965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.03 : 1,372.01 = 699.40 : x
  2. Step 2: Convert to fraction form
    994.03/1,372.01 = 699.40/x
  3. Step 3: Cross multiply
    994.03x = 1,372.01 × 699.40
  4. Step 4: Simplify right side
    994.03x = 959,583.79
  5. Step 5: Solve for x
    x = 959,583.79/994.03
  6. Step 6: Final answer
    x = 965.35

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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.