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Finding the Fourth Proportional to 303.70, 419.02 and 205.74

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Solution

The fourth proportional to 303.70, 419.02 and 205.74 is: 283.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.70 : 419.02 = 205.74 : x
  2. Step 2: Convert to fraction form
    303.70/419.02 = 205.74/x
  3. Step 3: Cross multiply
    303.70x = 419.02 × 205.74
  4. Step 4: Simplify right side
    303.70x = 86,209.17
  5. Step 5: Solve for x
    x = 86,209.17/303.70
  6. Step 6: Final answer
    x = 283.86

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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.