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Finding the Fourth Proportional to 994.37, 1,491.62 and 263.95

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Solution

The fourth proportional to 994.37, 1,491.62 and 263.95 is: 395.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.37 : 1,491.62 = 263.95 : x
  2. Step 2: Convert to fraction form
    994.37/1,491.62 = 263.95/x
  3. Step 3: Cross multiply
    994.37x = 1,491.62 × 263.95
  4. Step 4: Simplify right side
    994.37x = 393,708.05
  5. Step 5: Solve for x
    x = 393,708.05/994.37
  6. Step 6: Final answer
    x = 395.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.