Finding the Fourth Proportional to 380.82, 572.26 and 207.62
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Solution
The fourth proportional to 380.82, 572.26 and 207.62 is: 311.98
Step by Step Solution
- Step 1: Write the proportion equation
380.82 : 572.26 = 207.62 : x - Step 2: Convert to fraction form
380.82/572.26 = 207.62/x - Step 3: Cross multiply
380.82x = 572.26 × 207.62 - Step 4: Simplify right side
380.82x = 118,809.24 - Step 5: Solve for x
x = 118,809.24/380.82 - Step 6: Final answer
x = 311.98
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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.