Finding the Fourth Proportional to 378.18, 567.68 and 161.91
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Solution
The fourth proportional to 378.18, 567.68 and 161.91 is: 243.04
Step by Step Solution
- Step 1: Write the proportion equation
378.18 : 567.68 = 161.91 : x - Step 2: Convert to fraction form
378.18/567.68 = 161.91/x - Step 3: Cross multiply
378.18x = 567.68 × 161.91 - Step 4: Simplify right side
378.18x = 91,912.26 - Step 5: Solve for x
x = 91,912.26/378.18 - Step 6: Final answer
x = 243.04
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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.