Finding the Fourth Proportional to 190.68, 286.05 and 68.99
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Solution
The fourth proportional to 190.68, 286.05 and 68.99 is: 103.49
Step by Step Solution
- Step 1: Write the proportion equation
190.68 : 286.05 = 68.99 : x - Step 2: Convert to fraction form
190.68/286.05 = 68.99/x - Step 3: Cross multiply
190.68x = 286.05 × 68.99 - Step 4: Simplify right side
190.68x = 19,733.16 - Step 5: Solve for x
x = 19,733.16/190.68 - Step 6: Final answer
x = 103.49
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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.