Finding the Fourth Proportional to 316.44, 474.62 and 121.44
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Solution
The fourth proportional to 316.44, 474.62 and 121.44 is: 182.14
Step by Step Solution
- Step 1: Write the proportion equation
316.44 : 474.62 = 121.44 : x - Step 2: Convert to fraction form
316.44/474.62 = 121.44/x - Step 3: Cross multiply
316.44x = 474.62 × 121.44 - Step 4: Simplify right side
316.44x = 57,637.25 - Step 5: Solve for x
x = 57,637.25/316.44 - Step 6: Final answer
x = 182.14
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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.