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Finding the Fourth Proportional to 298.35, 447.56 and 103.33

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Solution

The fourth proportional to 298.35, 447.56 and 103.33 is: 155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.35 : 447.56 = 103.33 : x
  2. Step 2: Convert to fraction form
    298.35/447.56 = 103.33/x
  3. Step 3: Cross multiply
    298.35x = 447.56 × 103.33
  4. Step 4: Simplify right side
    298.35x = 46,243.62
  5. Step 5: Solve for x
    x = 46,243.62/298.35
  6. Step 6: Final answer
    x = 155.00

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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.