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Finding the Fourth Proportional to 298.11, 409.20 and 264.63

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Solution

The fourth proportional to 298.11, 409.20 and 264.63 is: 363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.11 : 409.20 = 264.63 : x
  2. Step 2: Convert to fraction form
    298.11/409.20 = 264.63/x
  3. Step 3: Cross multiply
    298.11x = 409.20 × 264.63
  4. Step 4: Simplify right side
    298.11x = 108,285.93
  5. Step 5: Solve for x
    x = 108,285.93/298.11
  6. Step 6: Final answer
    x = 363.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.