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Finding the Fourth Proportional to 1,226.82, 1,692.93 and 729.27

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Solution

The fourth proportional to 1,226.82, 1,692.93 and 729.27 is: 1,006.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.82 : 1,692.93 = 729.27 : x
  2. Step 2: Convert to fraction form
    1,226.82/1,692.93 = 729.27/x
  3. Step 3: Cross multiply
    1,226.82x = 1,692.93 × 729.27
  4. Step 4: Simplify right side
    1,226.82x = 1,234,603.06
  5. Step 5: Solve for x
    x = 1,234,603.06/1,226.82
  6. Step 6: Final answer
    x = 1,006.34

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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.