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Finding the Fourth Proportional to 1,323.45, 1,984.06 and 835.43

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Solution

The fourth proportional to 1,323.45, 1,984.06 and 835.43 is: 1,252.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.45 : 1,984.06 = 835.43 : x
  2. Step 2: Convert to fraction form
    1,323.45/1,984.06 = 835.43/x
  3. Step 3: Cross multiply
    1,323.45x = 1,984.06 × 835.43
  4. Step 4: Simplify right side
    1,323.45x = 1,657,543.25
  5. Step 5: Solve for x
    x = 1,657,543.25/1,323.45
  6. Step 6: Final answer
    x = 1,252.44

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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.