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Finding the Fourth Proportional to 722.82, 1,083.98 and 235.75

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Solution

The fourth proportional to 722.82, 1,083.98 and 235.75 is: 353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.82 : 1,083.98 = 235.75 : x
  2. Step 2: Convert to fraction form
    722.82/1,083.98 = 235.75/x
  3. Step 3: Cross multiply
    722.82x = 1,083.98 × 235.75
  4. Step 4: Simplify right side
    722.82x = 255,548.29
  5. Step 5: Solve for x
    x = 255,548.29/722.82
  6. Step 6: Final answer
    x = 353.54

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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.