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Finding the Fourth Proportional to 1,323.89, 1,984.83 and 803.77

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Solution

The fourth proportional to 1,323.89, 1,984.83 and 803.77 is: 1,205.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.89 : 1,984.83 = 803.77 : x
  2. Step 2: Convert to fraction form
    1,323.89/1,984.83 = 803.77/x
  3. Step 3: Cross multiply
    1,323.89x = 1,984.83 × 803.77
  4. Step 4: Simplify right side
    1,323.89x = 1,595,346.81
  5. Step 5: Solve for x
    x = 1,595,346.81/1,323.89
  6. Step 6: Final answer
    x = 1,205.04

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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.