Finding the Fourth Proportional to 216.08, 324.08 and 79.09
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Solution
The fourth proportional to 216.08, 324.08 and 79.09 is: 118.62
Step by Step Solution
- Step 1: Write the proportion equation
216.08 : 324.08 = 79.09 : x - Step 2: Convert to fraction form
216.08/324.08 = 79.09/x - Step 3: Cross multiply
216.08x = 324.08 × 79.09 - Step 4: Simplify right side
216.08x = 25,631.79 - Step 5: Solve for x
x = 25,631.79/216.08 - Step 6: Final answer
x = 118.62
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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.