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Finding the Fourth Proportional to 1,323.75, 1,826.61 and 734.21

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Solution

The fourth proportional to 1,323.75, 1,826.61 and 734.21 is: 1,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.75 : 1,826.61 = 734.21 : x
  2. Step 2: Convert to fraction form
    1,323.75/1,826.61 = 734.21/x
  3. Step 3: Cross multiply
    1,323.75x = 1,826.61 × 734.21
  4. Step 4: Simplify right side
    1,323.75x = 1,341,106.20
  5. Step 5: Solve for x
    x = 1,341,106.20/1,323.75
  6. Step 6: Final answer
    x = 1,013.11

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1.5x scale

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.