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Finding the Fourth Proportional to 574.97, 793.46 and 312.98

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Solution

The fourth proportional to 574.97, 793.46 and 312.98 is: 431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.97 : 793.46 = 312.98 : x
  2. Step 2: Convert to fraction form
    574.97/793.46 = 312.98/x
  3. Step 3: Cross multiply
    574.97x = 793.46 × 312.98
  4. Step 4: Simplify right side
    574.97x = 248,335.55
  5. Step 5: Solve for x
    x = 248,335.55/574.97
  6. Step 6: Final answer
    x = 431.91

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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.