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Finding the Fourth Proportional to 994.46, 1,372.41 and 574.89

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Solution

The fourth proportional to 994.46, 1,372.41 and 574.89 is: 793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.46 : 1,372.41 = 574.89 : x
  2. Step 2: Convert to fraction form
    994.46/1,372.41 = 574.89/x
  3. Step 3: Cross multiply
    994.46x = 1,372.41 × 574.89
  4. Step 4: Simplify right side
    994.46x = 788,979.64
  5. Step 5: Solve for x
    x = 788,979.64/994.46
  6. Step 6: Final answer
    x = 793.38

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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.