Finding the Fourth Proportional to 770, 1,154.99 and 192.88
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Solution
The fourth proportional to 770, 1,154.99 and 192.88 is: 289.32
Step by Step Solution
- Step 1: Write the proportion equation
770 : 1,154.99 = 192.88 : x - Step 2: Convert to fraction form
770/1,154.99 = 192.88/x - Step 3: Cross multiply
770x = 1,154.99 × 192.88 - Step 4: Simplify right side
770x = 222,774.47 - Step 5: Solve for x
x = 222,774.47/770 - Step 6: Final answer
x = 289.32
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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.