Finding the Fourth Proportional to 286.24, 429.36 and 121.67
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Solution
The fourth proportional to 286.24, 429.36 and 121.67 is: 182.51
Step by Step Solution
- Step 1: Write the proportion equation
286.24 : 429.36 = 121.67 : x - Step 2: Convert to fraction form
286.24/429.36 = 121.67/x - Step 3: Cross multiply
286.24x = 429.36 × 121.67 - Step 4: Simplify right side
286.24x = 52,240.23 - Step 5: Solve for x
x = 52,240.23/286.24 - Step 6: Final answer
x = 182.51
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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.