Finding the Fourth Proportional to 321.12, 481.68 and 150
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Solution
The fourth proportional to 321.12, 481.68 and 150 is: 225
Step by Step Solution
- Step 1: Write the proportion equation
321.12 : 481.68 = 150 : x - Step 2: Convert to fraction form
321.12/481.68 = 150/x - Step 3: Cross multiply
321.12x = 481.68 × 150 - Step 4: Simplify right side
321.12x = 72,252 - Step 5: Solve for x
x = 72,252/321.12 - Step 6: Final answer
x = 225
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.