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Finding the Fourth Proportional to 697.95, 959.60 and 622.57

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Solution

The fourth proportional to 697.95, 959.60 and 622.57 is: 855.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.95 : 959.60 = 622.57 : x
  2. Step 2: Convert to fraction form
    697.95/959.60 = 622.57/x
  3. Step 3: Cross multiply
    697.95x = 959.60 × 622.57
  4. Step 4: Simplify right side
    697.95x = 597,418.17
  5. Step 5: Solve for x
    x = 597,418.17/697.95
  6. Step 6: Final answer
    x = 855.96

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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.