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Finding the Fourth Proportional to 657.98, 986.98 and 441.44

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Solution

The fourth proportional to 657.98, 986.98 and 441.44 is: 662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.98 : 986.98 = 441.44 : x
  2. Step 2: Convert to fraction form
    657.98/986.98 = 441.44/x
  3. Step 3: Cross multiply
    657.98x = 986.98 × 441.44
  4. Step 4: Simplify right side
    657.98x = 435,692.45
  5. Step 5: Solve for x
    x = 435,692.45/657.98
  6. Step 6: Final answer
    x = 662.17

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Double scale
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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.