Finding the Fourth Proportional to 306.68, 459.66 and 198.68
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Solution
The fourth proportional to 306.68, 459.66 and 198.68 is: 297.79
Step by Step Solution
- Step 1: Write the proportion equation
306.68 : 459.66 = 198.68 : x - Step 2: Convert to fraction form
306.68/459.66 = 198.68/x - Step 3: Cross multiply
306.68x = 459.66 × 198.68 - Step 4: Simplify right side
306.68x = 91,325.25 - Step 5: Solve for x
x = 91,325.25/306.68 - Step 6: Final answer
x = 297.79
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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.