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Finding the Fourth Proportional to 298.35, 411.83 and 180.39

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Solution

The fourth proportional to 298.35, 411.83 and 180.39 is: 249.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.35 : 411.83 = 180.39 : x
  2. Step 2: Convert to fraction form
    298.35/411.83 = 180.39/x
  3. Step 3: Cross multiply
    298.35x = 411.83 × 180.39
  4. Step 4: Simplify right side
    298.35x = 74,289.11
  5. Step 5: Solve for x
    x = 74,289.11/298.35
  6. Step 6: Final answer
    x = 249.00

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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.