Finding the Fourth Proportional to 228.26, 314.97 and 129.99
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Solution
The fourth proportional to 228.26, 314.97 and 129.99 is: 179.37
Step by Step Solution
- Step 1: Write the proportion equation
228.26 : 314.97 = 129.99 : x - Step 2: Convert to fraction form
228.26/314.97 = 129.99/x - Step 3: Cross multiply
228.26x = 314.97 × 129.99 - Step 4: Simplify right side
228.26x = 40,942.95 - Step 5: Solve for x
x = 40,942.95/228.26 - Step 6: Final answer
x = 179.37
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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.