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Finding the Fourth Proportional to 1,323.83, 1,984.61 and 835.80

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Solution

The fourth proportional to 1,323.83, 1,984.61 and 835.80 is: 1,252.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.83 : 1,984.61 = 835.80 : x
  2. Step 2: Convert to fraction form
    1,323.83/1,984.61 = 835.80/x
  3. Step 3: Cross multiply
    1,323.83x = 1,984.61 × 835.80
  4. Step 4: Simplify right side
    1,323.83x = 1,658,737.04
  5. Step 5: Solve for x
    x = 1,658,737.04/1,323.83
  6. Step 6: Final answer
    x = 1,252.98

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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.