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Finding the Fourth Proportional to 692.11, 1,037.83 and 253.05

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Solution

The fourth proportional to 692.11, 1,037.83 and 253.05 is: 379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.11 : 1,037.83 = 253.05 : x
  2. Step 2: Convert to fraction form
    692.11/1,037.83 = 253.05/x
  3. Step 3: Cross multiply
    692.11x = 1,037.83 × 253.05
  4. Step 4: Simplify right side
    692.11x = 262,622.88
  5. Step 5: Solve for x
    x = 262,622.88/692.11
  6. Step 6: Final answer
    x = 379.45

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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.