Finding the Fourth Proportional to 305.88, 422.18 and 207.48
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Solution
The fourth proportional to 305.88, 422.18 and 207.48 is: 286.37
Step by Step Solution
- Step 1: Write the proportion equation
305.88 : 422.18 = 207.48 : x - Step 2: Convert to fraction form
305.88/422.18 = 207.48/x - Step 3: Cross multiply
305.88x = 422.18 × 207.48 - Step 4: Simplify right side
305.88x = 87,593.91 - Step 5: Solve for x
x = 87,593.91/305.88 - Step 6: Final answer
x = 286.37
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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.