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Finding the Fourth Proportional to 322, 444.40 and 205.60

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Solution

The fourth proportional to 322, 444.40 and 205.60 is: 283.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    322 : 444.40 = 205.60 : x
  2. Step 2: Convert to fraction form
    322/444.40 = 205.60/x
  3. Step 3: Cross multiply
    322x = 444.40 × 205.60
  4. Step 4: Simplify right side
    322x = 91,368.64
  5. Step 5: Solve for x
    x = 91,368.64/322
  6. Step 6: Final answer
    x = 283.75

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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.