Finding the Fourth Proportional to 116.10, 160.21 and 65.62
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Solution
The fourth proportional to 116.10, 160.21 and 65.62 is: 90.55
Step by Step Solution
- Step 1: Write the proportion equation
116.10 : 160.21 = 65.62 : x - Step 2: Convert to fraction form
116.10/160.21 = 65.62/x - Step 3: Cross multiply
116.10x = 160.21 × 65.62 - Step 4: Simplify right side
116.10x = 10,512.91 - Step 5: Solve for x
x = 10,512.91/116.10 - Step 6: Final answer
x = 90.55
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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.