Finding the Fourth Proportional to 72.96, 101.18 and 69.60
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Solution
The fourth proportional to 72.96, 101.18 and 69.60 is: 96.52
Step by Step Solution
- Step 1: Write the proportion equation
72.96 : 101.18 = 69.60 : x - Step 2: Convert to fraction form
72.96/101.18 = 69.60/x - Step 3: Cross multiply
72.96x = 101.18 × 69.60 - Step 4: Simplify right side
72.96x = 7,042.13 - Step 5: Solve for x
x = 7,042.13/72.96 - Step 6: Final answer
x = 96.52
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.