Finding the Fourth Proportional to 214.12, 320.88 and 122.68
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Solution
The fourth proportional to 214.12, 320.88 and 122.68 is: 183.85
Step by Step Solution
- Step 1: Write the proportion equation
214.12 : 320.88 = 122.68 : x - Step 2: Convert to fraction form
214.12/320.88 = 122.68/x - Step 3: Cross multiply
214.12x = 320.88 × 122.68 - Step 4: Simplify right side
214.12x = 39,365.56 - Step 5: Solve for x
x = 39,365.56/214.12 - Step 6: Final answer
x = 183.85
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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.