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Finding the Fourth Proportional to 692.05, 955.07 and 397.41

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Solution

The fourth proportional to 692.05, 955.07 and 397.41 is: 548.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.05 : 955.07 = 397.41 : x
  2. Step 2: Convert to fraction form
    692.05/955.07 = 397.41/x
  3. Step 3: Cross multiply
    692.05x = 955.07 × 397.41
  4. Step 4: Simplify right side
    692.05x = 379,557.23
  5. Step 5: Solve for x
    x = 379,557.23/692.05
  6. Step 6: Final answer
    x = 548.45

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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.