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Finding the Fourth Proportional to 298.02, 410.73 and 220.26

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Solution

The fourth proportional to 298.02, 410.73 and 220.26 is: 303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.02 : 410.73 = 220.26 : x
  2. Step 2: Convert to fraction form
    298.02/410.73 = 220.26/x
  3. Step 3: Cross multiply
    298.02x = 410.73 × 220.26
  4. Step 4: Simplify right side
    298.02x = 90,467.39
  5. Step 5: Solve for x
    x = 90,467.39/298.02
  6. Step 6: Final answer
    x = 303.56

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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.