Finding the Fourth Proportional to 214.62, 321.95 and 77.63
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Solution
The fourth proportional to 214.62, 321.95 and 77.63 is: 116.45
Step by Step Solution
- Step 1: Write the proportion equation
214.62 : 321.95 = 77.63 : x - Step 2: Convert to fraction form
214.62/321.95 = 77.63/x - Step 3: Cross multiply
214.62x = 321.95 × 77.63 - Step 4: Simplify right side
214.62x = 24,992.98 - Step 5: Solve for x
x = 24,992.98/214.62 - Step 6: Final answer
x = 116.45
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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.