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Finding the Fourth Proportional to 697.88, 1,046.96 and 235.72

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Solution

The fourth proportional to 697.88, 1,046.96 and 235.72 is: 353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.88 : 1,046.96 = 235.72 : x
  2. Step 2: Convert to fraction form
    697.88/1,046.96 = 235.72/x
  3. Step 3: Cross multiply
    697.88x = 1,046.96 × 235.72
  4. Step 4: Simplify right side
    697.88x = 246,789.41
  5. Step 5: Solve for x
    x = 246,789.41/697.88
  6. Step 6: Final answer
    x = 353.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.