Finding the Fourth Proportional to 319.14, 440.36 and 194.80
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Solution
The fourth proportional to 319.14, 440.36 and 194.80 is: 268.79
Step by Step Solution
- Step 1: Write the proportion equation
319.14 : 440.36 = 194.80 : x - Step 2: Convert to fraction form
319.14/440.36 = 194.80/x - Step 3: Cross multiply
319.14x = 440.36 × 194.80 - Step 4: Simplify right side
319.14x = 85,782.13 - Step 5: Solve for x
x = 85,782.13/319.14 - Step 6: Final answer
x = 268.79
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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.