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Finding the Fourth Proportional to 994.88, 1,479.92 and 984.35

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Solution

The fourth proportional to 994.88, 1,479.92 and 984.35 is: 1,464.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.88 : 1,479.92 = 984.35 : x
  2. Step 2: Convert to fraction form
    994.88/1,479.92 = 984.35/x
  3. Step 3: Cross multiply
    994.88x = 1,479.92 × 984.35
  4. Step 4: Simplify right side
    994.88x = 1,456,759.25
  5. Step 5: Solve for x
    x = 1,456,759.25/994.88
  6. Step 6: Final answer
    x = 1,464.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.