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Finding the Fourth Proportional to 1,323.21, 1,826.07 and 733.80

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Solution

The fourth proportional to 1,323.21, 1,826.07 and 733.80 is: 1,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.21 : 1,826.07 = 733.80 : x
  2. Step 2: Convert to fraction form
    1,323.21/1,826.07 = 733.80/x
  3. Step 3: Cross multiply
    1,323.21x = 1,826.07 × 733.80
  4. Step 4: Simplify right side
    1,323.21x = 1,339,970.17
  5. Step 5: Solve for x
    x = 1,339,970.17/1,323.21
  6. Step 6: Final answer
    x = 1,012.67

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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.