Finding the Fourth Proportional to 221.99, 306.35 and 122.42
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Solution
The fourth proportional to 221.99, 306.35 and 122.42 is: 168.93
Step by Step Solution
- Step 1: Write the proportion equation
221.99 : 306.35 = 122.42 : x - Step 2: Convert to fraction form
221.99/306.35 = 122.42/x - Step 3: Cross multiply
221.99x = 306.35 × 122.42 - Step 4: Simplify right side
221.99x = 37,502.14 - Step 5: Solve for x
x = 37,502.14/221.99 - Step 6: Final answer
x = 168.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.