Finding the Fourth Proportional to 317.63, 438.25 and 193.26
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Solution
The fourth proportional to 317.63, 438.25 and 193.26 is: 266.65
Step by Step Solution
- Step 1: Write the proportion equation
317.63 : 438.25 = 193.26 : x - Step 2: Convert to fraction form
317.63/438.25 = 193.26/x - Step 3: Cross multiply
317.63x = 438.25 × 193.26 - Step 4: Simplify right side
317.63x = 84,696.20 - Step 5: Solve for x
x = 84,696.20/317.63 - Step 6: Final answer
x = 266.65
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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.