Finding the Fourth Proportional to 217.99, 327.08 and 81.01
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Solution
The fourth proportional to 217.99, 327.08 and 81.01 is: 121.54
Step by Step Solution
- Step 1: Write the proportion equation
217.99 : 327.08 = 81.01 : x - Step 2: Convert to fraction form
217.99/327.08 = 81.01/x - Step 3: Cross multiply
217.99x = 327.08 × 81.01 - Step 4: Simplify right side
217.99x = 26,495.12 - Step 5: Solve for x
x = 26,495.12/217.99 - Step 6: Final answer
x = 121.54
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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.