Finding the Fourth Proportional to 316.42, 436.62 and 217.99
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Solution
The fourth proportional to 316.42, 436.62 and 217.99 is: 300.80
Step by Step Solution
- Step 1: Write the proportion equation
316.42 : 436.62 = 217.99 : x - Step 2: Convert to fraction form
316.42/436.62 = 217.99/x - Step 3: Cross multiply
316.42x = 436.62 × 217.99 - Step 4: Simplify right side
316.42x = 95,178.79 - Step 5: Solve for x
x = 95,178.79/316.42 - Step 6: Final answer
x = 300.80
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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.