Finding the Fourth Proportional to 286.13, 394.99 and 192.94
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Solution
The fourth proportional to 286.13, 394.99 and 192.94 is: 266.35
Step by Step Solution
- Step 1: Write the proportion equation
286.13 : 394.99 = 192.94 : x - Step 2: Convert to fraction form
286.13/394.99 = 192.94/x - Step 3: Cross multiply
286.13x = 394.99 × 192.94 - Step 4: Simplify right side
286.13x = 76,209.37 - Step 5: Solve for x
x = 76,209.37/286.13 - Step 6: Final answer
x = 266.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.