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Finding the Fourth Proportional to 1,163.39, 1,745.39 and 383.51

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Solution

The fourth proportional to 1,163.39, 1,745.39 and 383.51 is: 575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.39 : 1,745.39 = 383.51 : x
  2. Step 2: Convert to fraction form
    1,163.39/1,745.39 = 383.51/x
  3. Step 3: Cross multiply
    1,163.39x = 1,745.39 × 383.51
  4. Step 4: Simplify right side
    1,163.39x = 669,379.84
  5. Step 5: Solve for x
    x = 669,379.84/1,163.39
  6. Step 6: Final answer
    x = 575.37

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Double scale
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1.5x scale

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.