Finding the Fourth Proportional to 219.57, 329.37 and 91.32
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Solution
The fourth proportional to 219.57, 329.37 and 91.32 is: 136.99
Step by Step Solution
- Step 1: Write the proportion equation
219.57 : 329.37 = 91.32 : x - Step 2: Convert to fraction form
219.57/329.37 = 91.32/x - Step 3: Cross multiply
219.57x = 329.37 × 91.32 - Step 4: Simplify right side
219.57x = 30,078.07 - Step 5: Solve for x
x = 30,078.07/219.57 - Step 6: Final answer
x = 136.99
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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.