Finding the Fourth Proportional to 70.44, 97.21 and 68.55
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Solution
The fourth proportional to 70.44, 97.21 and 68.55 is: 94.60
Step by Step Solution
- Step 1: Write the proportion equation
70.44 : 97.21 = 68.55 : x - Step 2: Convert to fraction form
70.44/97.21 = 68.55/x - Step 3: Cross multiply
70.44x = 97.21 × 68.55 - Step 4: Simplify right side
70.44x = 6,663.75 - Step 5: Solve for x
x = 6,663.75/70.44 - Step 6: Final answer
x = 94.60
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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.