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Finding the Fourth Proportional to 692.22, 954.80 and 668.46

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Solution

The fourth proportional to 692.22, 954.80 and 668.46 is: 922.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.22 : 954.80 = 668.46 : x
  2. Step 2: Convert to fraction form
    692.22/954.80 = 668.46/x
  3. Step 3: Cross multiply
    692.22x = 954.80 × 668.46
  4. Step 4: Simplify right side
    692.22x = 638,245.61
  5. Step 5: Solve for x
    x = 638,245.61/692.22
  6. Step 6: Final answer
    x = 922.03

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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.