Finding the Fourth Proportional to 230.71, 345.99 and 115.09
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Solution
The fourth proportional to 230.71, 345.99 and 115.09 is: 172.60
Step by Step Solution
- Step 1: Write the proportion equation
230.71 : 345.99 = 115.09 : x - Step 2: Convert to fraction form
230.71/345.99 = 115.09/x - Step 3: Cross multiply
230.71x = 345.99 × 115.09 - Step 4: Simplify right side
230.71x = 39,819.99 - Step 5: Solve for x
x = 39,819.99/230.71 - Step 6: Final answer
x = 172.60
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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.