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Finding the Fourth Proportional to 692.44, 955.08 and 669.56

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Solution

The fourth proportional to 692.44, 955.08 and 669.56 is: 923.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.44 : 955.08 = 669.56 : x
  2. Step 2: Convert to fraction form
    692.44/955.08 = 669.56/x
  3. Step 3: Cross multiply
    692.44x = 955.08 × 669.56
  4. Step 4: Simplify right side
    692.44x = 639,483.96
  5. Step 5: Solve for x
    x = 639,483.96/692.44
  6. Step 6: Final answer
    x = 923.52

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1.5x scale

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.