Finding the Fourth Proportional to 379.99, 569.84 and 133.12
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Solution
The fourth proportional to 379.99, 569.84 and 133.12 is: 199.63
Step by Step Solution
- Step 1: Write the proportion equation
379.99 : 569.84 = 133.12 : x - Step 2: Convert to fraction form
379.99/569.84 = 133.12/x - Step 3: Cross multiply
379.99x = 569.84 × 133.12 - Step 4: Simplify right side
379.99x = 75,857.10 - Step 5: Solve for x
x = 75,857.10/379.99 - Step 6: Final answer
x = 199.63
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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.