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Finding the Fourth Proportional to 747.05, 1,120.87 and 336.07

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Solution

The fourth proportional to 747.05, 1,120.87 and 336.07 is: 504.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.05 : 1,120.87 = 336.07 : x
  2. Step 2: Convert to fraction form
    747.05/1,120.87 = 336.07/x
  3. Step 3: Cross multiply
    747.05x = 1,120.87 × 336.07
  4. Step 4: Simplify right side
    747.05x = 376,692.60
  5. Step 5: Solve for x
    x = 376,692.60/747.05
  6. Step 6: Final answer
    x = 504.24

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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.