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Finding the Fourth Proportional to 994.71, 1,372.59 and 574.98

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Solution

The fourth proportional to 994.71, 1,372.59 and 574.98 is: 793.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.71 : 1,372.59 = 574.98 : x
  2. Step 2: Convert to fraction form
    994.71/1,372.59 = 574.98/x
  3. Step 3: Cross multiply
    994.71x = 1,372.59 × 574.98
  4. Step 4: Simplify right side
    994.71x = 789,211.80
  5. Step 5: Solve for x
    x = 789,211.80/994.71
  6. Step 6: Final answer
    x = 793.41

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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.