Finding the Fourth Proportional to 70.97, 98.08 and 63.54
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Solution
The fourth proportional to 70.97, 98.08 and 63.54 is: 87.82
Step by Step Solution
- Step 1: Write the proportion equation
70.97 : 98.08 = 63.54 : x - Step 2: Convert to fraction form
70.97/98.08 = 63.54/x - Step 3: Cross multiply
70.97x = 98.08 × 63.54 - Step 4: Simplify right side
70.97x = 6,231.84 - Step 5: Solve for x
x = 6,231.84/70.97 - Step 6: Final answer
x = 87.82
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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.