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Finding the Fourth Proportional to 298.85, 412.49 and 180.82

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Solution

The fourth proportional to 298.85, 412.49 and 180.82 is: 249.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.85 : 412.49 = 180.82 : x
  2. Step 2: Convert to fraction form
    298.85/412.49 = 180.82/x
  3. Step 3: Cross multiply
    298.85x = 412.49 × 180.82
  4. Step 4: Simplify right side
    298.85x = 74,586.89
  5. Step 5: Solve for x
    x = 74,586.89/298.85
  6. Step 6: Final answer
    x = 249.58

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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.