Finding the Fourth Proportional to 306.14, 422.96 and 239.99
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Solution
The fourth proportional to 306.14, 422.96 and 239.99 is: 331.56
Step by Step Solution
- Step 1: Write the proportion equation
306.14 : 422.96 = 239.99 : x - Step 2: Convert to fraction form
306.14/422.96 = 239.99/x - Step 3: Cross multiply
306.14x = 422.96 × 239.99 - Step 4: Simplify right side
306.14x = 101,502.86 - Step 5: Solve for x
x = 101,502.86/306.14 - Step 6: Final answer
x = 331.56
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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.