Finding the Fourth Proportional to 286.97, 394.99 and 239.81
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Solution
The fourth proportional to 286.97, 394.99 and 239.81 is: 330.08
Step by Step Solution
- Step 1: Write the proportion equation
286.97 : 394.99 = 239.81 : x - Step 2: Convert to fraction form
286.97/394.99 = 239.81/x - Step 3: Cross multiply
286.97x = 394.99 × 239.81 - Step 4: Simplify right side
286.97x = 94,720.96 - Step 5: Solve for x
x = 94,720.96/286.97 - Step 6: Final answer
x = 330.08
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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.