Finding the Fourth Proportional to 205.99, 309.03 and 84.26
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Solution
The fourth proportional to 205.99, 309.03 and 84.26 is: 126.40
Step by Step Solution
- Step 1: Write the proportion equation
205.99 : 309.03 = 84.26 : x - Step 2: Convert to fraction form
205.99/309.03 = 84.26/x - Step 3: Cross multiply
205.99x = 309.03 × 84.26 - Step 4: Simplify right side
205.99x = 26,037.53 - Step 5: Solve for x
x = 26,037.53/205.99 - Step 6: Final answer
x = 126.40
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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.