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Finding the Fourth Proportional to 694.77, 1,040.99 and 488.97

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Solution

The fourth proportional to 694.77, 1,040.99 and 488.97 is: 732.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.77 : 1,040.99 = 488.97 : x
  2. Step 2: Convert to fraction form
    694.77/1,040.99 = 488.97/x
  3. Step 3: Cross multiply
    694.77x = 1,040.99 × 488.97
  4. Step 4: Simplify right side
    694.77x = 509,010.44
  5. Step 5: Solve for x
    x = 509,010.44/694.77
  6. Step 6: Final answer
    x = 732.63

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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.