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Finding the Fourth Proportional to 694.98, 959.09 and 400.28

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Solution

The fourth proportional to 694.98, 959.09 and 400.28 is: 552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.98 : 959.09 = 400.28 : x
  2. Step 2: Convert to fraction form
    694.98/959.09 = 400.28/x
  3. Step 3: Cross multiply
    694.98x = 959.09 × 400.28
  4. Step 4: Simplify right side
    694.98x = 383,897.75
  5. Step 5: Solve for x
    x = 383,897.75/694.98
  6. Step 6: Final answer
    x = 552.39

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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.