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Finding the Fourth Proportional to 704.98, 967.52 and 639.37

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Solution

The fourth proportional to 704.98, 967.52 and 639.37 is: 877.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.98 : 967.52 = 639.37 : x
  2. Step 2: Convert to fraction form
    704.98/967.52 = 639.37/x
  3. Step 3: Cross multiply
    704.98x = 967.52 × 639.37
  4. Step 4: Simplify right side
    704.98x = 618,603.26
  5. Step 5: Solve for x
    x = 618,603.26/704.98
  6. Step 6: Final answer
    x = 877.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.