Finding the Fourth Proportional to 225.25, 310.86 and 126.99
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Solution
The fourth proportional to 225.25, 310.86 and 126.99 is: 175.26
Step by Step Solution
- Step 1: Write the proportion equation
225.25 : 310.86 = 126.99 : x - Step 2: Convert to fraction form
225.25/310.86 = 126.99/x - Step 3: Cross multiply
225.25x = 310.86 × 126.99 - Step 4: Simplify right side
225.25x = 39,476.11 - Step 5: Solve for x
x = 39,476.11/225.25 - Step 6: Final answer
x = 175.26
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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.