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Finding the Fourth Proportional to 298.33, 411.68 and 165.55

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Solution

The fourth proportional to 298.33, 411.68 and 165.55 is: 228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.33 : 411.68 = 165.55 : x
  2. Step 2: Convert to fraction form
    298.33/411.68 = 165.55/x
  3. Step 3: Cross multiply
    298.33x = 411.68 × 165.55
  4. Step 4: Simplify right side
    298.33x = 68,150.74
  5. Step 5: Solve for x
    x = 68,150.74/298.33
  6. Step 6: Final answer
    x = 228.44

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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.