Home / 1,491.22-2,236.15-668.89

Finding the Fourth Proportional to 1,491.22, 2,236.15 and 668.89

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Solution

The fourth proportional to 1,491.22, 2,236.15 and 668.89 is: 1,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.22 : 2,236.15 = 668.89 : x
  2. Step 2: Convert to fraction form
    1,491.22/2,236.15 = 668.89/x
  3. Step 3: Cross multiply
    1,491.22x = 2,236.15 × 668.89
  4. Step 4: Simplify right side
    1,491.22x = 1,495,738.37
  5. Step 5: Solve for x
    x = 1,495,738.37/1,491.22
  6. Step 6: Final answer
    x = 1,003.03

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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.