Finding the Fourth Proportional to 371.70, 556.11 and 243.70
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Solution
The fourth proportional to 371.70, 556.11 and 243.70 is: 364.61
Step by Step Solution
- Step 1: Write the proportion equation
371.70 : 556.11 = 243.70 : x - Step 2: Convert to fraction form
371.70/556.11 = 243.70/x - Step 3: Cross multiply
371.70x = 556.11 × 243.70 - Step 4: Simplify right side
371.70x = 135,524.01 - Step 5: Solve for x
x = 135,524.01/371.70 - Step 6: Final answer
x = 364.61
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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.