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Finding the Fourth Proportional to 994.46, 1,372.52 and 574.74

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Solution

The fourth proportional to 994.46, 1,372.52 and 574.74 is: 793.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.46 : 1,372.52 = 574.74 : x
  2. Step 2: Convert to fraction form
    994.46/1,372.52 = 574.74/x
  3. Step 3: Cross multiply
    994.46x = 1,372.52 × 574.74
  4. Step 4: Simplify right side
    994.46x = 788,843.58
  5. Step 5: Solve for x
    x = 788,843.58/994.46
  6. Step 6: Final answer
    x = 793.24

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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.