Finding the Fourth Proportional to 316.26, 474.44 and 145.26
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Solution
The fourth proportional to 316.26, 474.44 and 145.26 is: 217.91
Step by Step Solution
- Step 1: Write the proportion equation
316.26 : 474.44 = 145.26 : x - Step 2: Convert to fraction form
316.26/474.44 = 145.26/x - Step 3: Cross multiply
316.26x = 474.44 × 145.26 - Step 4: Simplify right side
316.26x = 68,917.15 - Step 5: Solve for x
x = 68,917.15/316.26 - Step 6: Final answer
x = 217.91
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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.