Finding the Fourth Proportional to 214.99, 296.70 and 121.75
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Solution
The fourth proportional to 214.99, 296.70 and 121.75 is: 168.02
Step by Step Solution
- Step 1: Write the proportion equation
214.99 : 296.70 = 121.75 : x - Step 2: Convert to fraction form
214.99/296.70 = 121.75/x - Step 3: Cross multiply
214.99x = 296.70 × 121.75 - Step 4: Simplify right side
214.99x = 36,123.23 - Step 5: Solve for x
x = 36,123.23/214.99 - Step 6: Final answer
x = 168.02
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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.