Finding the Fourth Proportional to 519.41, 778.91 and 211.19
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Solution
The fourth proportional to 519.41, 778.91 and 211.19 is: 316.70
Step by Step Solution
- Step 1: Write the proportion equation
519.41 : 778.91 = 211.19 : x - Step 2: Convert to fraction form
519.41/778.91 = 211.19/x - Step 3: Cross multiply
519.41x = 778.91 × 211.19 - Step 4: Simplify right side
519.41x = 164,493.05 - Step 5: Solve for x
x = 164,493.05/519.41 - Step 6: Final answer
x = 316.70
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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.