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Finding the Fourth Proportional to 306.75, 459.36 and 298.86

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Solution

The fourth proportional to 306.75, 459.36 and 298.86 is: 447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.75 : 459.36 = 298.86 : x
  2. Step 2: Convert to fraction form
    306.75/459.36 = 298.86/x
  3. Step 3: Cross multiply
    306.75x = 459.36 × 298.86
  4. Step 4: Simplify right side
    306.75x = 137,284.33
  5. Step 5: Solve for x
    x = 137,284.33/306.75
  6. Step 6: Final answer
    x = 447.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.