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Finding the Fourth Proportional to 994.37, 1,372.13 and 574.69

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Solution

The fourth proportional to 994.37, 1,372.13 and 574.69 is: 793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.37 : 1,372.13 = 574.69 : x
  2. Step 2: Convert to fraction form
    994.37/1,372.13 = 574.69/x
  3. Step 3: Cross multiply
    994.37x = 1,372.13 × 574.69
  4. Step 4: Simplify right side
    994.37x = 788,552.82
  5. Step 5: Solve for x
    x = 788,552.82/994.37
  6. Step 6: Final answer
    x = 793.02

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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.