Finding the Fourth Proportional to 316.14, 473.93 and 121.09
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Solution
The fourth proportional to 316.14, 473.93 and 121.09 is: 181.52
Step by Step Solution
- Step 1: Write the proportion equation
316.14 : 473.93 = 121.09 : x - Step 2: Convert to fraction form
316.14/473.93 = 121.09/x - Step 3: Cross multiply
316.14x = 473.93 × 121.09 - Step 4: Simplify right side
316.14x = 57,386.06 - Step 5: Solve for x
x = 57,386.06/316.14 - Step 6: Final answer
x = 181.52
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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.