Finding the Fourth Proportional to 219.93, 329.99 and 122.42
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Solution
The fourth proportional to 219.93, 329.99 and 122.42 is: 183.68
Step by Step Solution
- Step 1: Write the proportion equation
219.93 : 329.99 = 122.42 : x - Step 2: Convert to fraction form
219.93/329.99 = 122.42/x - Step 3: Cross multiply
219.93x = 329.99 × 122.42 - Step 4: Simplify right side
219.93x = 40,397.38 - Step 5: Solve for x
x = 40,397.38/219.93 - Step 6: Final answer
x = 183.68
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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.