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Finding the Fourth Proportional to 994.68, 1,372.32 and 574.92

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Solution

The fourth proportional to 994.68, 1,372.32 and 574.92 is: 793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.68 : 1,372.32 = 574.92 : x
  2. Step 2: Convert to fraction form
    994.68/1,372.32 = 574.92/x
  3. Step 3: Cross multiply
    994.68x = 1,372.32 × 574.92
  4. Step 4: Simplify right side
    994.68x = 788,974.21
  5. Step 5: Solve for x
    x = 788,974.21/994.68
  6. Step 6: Final answer
    x = 793.19

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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.