Finding the Fourth Proportional to 1,168, 1,611.84 and 644.06
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Solution
The fourth proportional to 1,168, 1,611.84 and 644.06 is: 888.80
Step by Step Solution
- Step 1: Write the proportion equation
1,168 : 1,611.84 = 644.06 : x - Step 2: Convert to fraction form
1,168/1,611.84 = 644.06/x - Step 3: Cross multiply
1,168x = 1,611.84 × 644.06 - Step 4: Simplify right side
1,168x = 1,038,121.67 - Step 5: Solve for x
x = 1,038,121.67/1,168 - Step 6: Final answer
x = 888.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.