Finding the Fourth Proportional to 313.26, 431.93 and 202.62
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Solution
The fourth proportional to 313.26, 431.93 and 202.62 is: 279.38
Step by Step Solution
- Step 1: Write the proportion equation
313.26 : 431.93 = 202.62 : x - Step 2: Convert to fraction form
313.26/431.93 = 202.62/x - Step 3: Cross multiply
313.26x = 431.93 × 202.62 - Step 4: Simplify right side
313.26x = 87,517.66 - Step 5: Solve for x
x = 87,517.66/313.26 - Step 6: Final answer
x = 279.38
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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.