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Finding the Fourth Proportional to 303.83, 419.28 and 205.60

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Solution

The fourth proportional to 303.83, 419.28 and 205.60 is: 283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.83 : 419.28 = 205.60 : x
  2. Step 2: Convert to fraction form
    303.83/419.28 = 205.60/x
  3. Step 3: Cross multiply
    303.83x = 419.28 × 205.60
  4. Step 4: Simplify right side
    303.83x = 86,203.97
  5. Step 5: Solve for x
    x = 86,203.97/303.83
  6. Step 6: Final answer
    x = 283.72

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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.