Home / 1,226.36-1,838.96-445.81

Finding the Fourth Proportional to 1,226.36, 1,838.96 and 445.81

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Solution

The fourth proportional to 1,226.36, 1,838.96 and 445.81 is: 668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.36 : 1,838.96 = 445.81 : x
  2. Step 2: Convert to fraction form
    1,226.36/1,838.96 = 445.81/x
  3. Step 3: Cross multiply
    1,226.36x = 1,838.96 × 445.81
  4. Step 4: Simplify right side
    1,226.36x = 819,832.47
  5. Step 5: Solve for x
    x = 819,832.47/1,226.36
  6. Step 6: Final answer
    x = 668.51

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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.