Finding the Fourth Proportional to 226.99, 313.26 and 128.75
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Solution
The fourth proportional to 226.99, 313.26 and 128.75 is: 177.68
Step by Step Solution
- Step 1: Write the proportion equation
226.99 : 313.26 = 128.75 : x - Step 2: Convert to fraction form
226.99/313.26 = 128.75/x - Step 3: Cross multiply
226.99x = 313.26 × 128.75 - Step 4: Simplify right side
226.99x = 40,332.23 - Step 5: Solve for x
x = 40,332.23/226.99 - Step 6: Final answer
x = 177.68
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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.