Finding the Fourth Proportional to 208.62, 312.93 and 154.44
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Solution
The fourth proportional to 208.62, 312.93 and 154.44 is: 231.66
Step by Step Solution
- Step 1: Write the proportion equation
208.62 : 312.93 = 154.44 : x - Step 2: Convert to fraction form
208.62/312.93 = 154.44/x - Step 3: Cross multiply
208.62x = 312.93 × 154.44 - Step 4: Simplify right side
208.62x = 48,328.91 - Step 5: Solve for x
x = 48,328.91/208.62 - Step 6: Final answer
x = 231.66
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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.