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Finding the Fourth Proportional to 881.44, 1,323.42 and 784.24

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Solution

The fourth proportional to 881.44, 1,323.42 and 784.24 is: 1,177.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.44 : 1,323.42 = 784.24 : x
  2. Step 2: Convert to fraction form
    881.44/1,323.42 = 784.24/x
  3. Step 3: Cross multiply
    881.44x = 1,323.42 × 784.24
  4. Step 4: Simplify right side
    881.44x = 1,037,878.90
  5. Step 5: Solve for x
    x = 1,037,878.90/881.44
  6. Step 6: Final answer
    x = 1,177.48

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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.