Finding the Fourth Proportional to 313.70, 472.97 and 272.93
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Solution
The fourth proportional to 313.70, 472.97 and 272.93 is: 411.50
Step by Step Solution
- Step 1: Write the proportion equation
313.70 : 472.97 = 272.93 : x - Step 2: Convert to fraction form
313.70/472.97 = 272.93/x - Step 3: Cross multiply
313.70x = 472.97 × 272.93 - Step 4: Simplify right side
313.70x = 129,087.70 - Step 5: Solve for x
x = 129,087.70/313.70 - Step 6: Final answer
x = 411.50
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.