Finding the Fourth Proportional to 97.19, 145.85 and 70.19
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Solution
The fourth proportional to 97.19, 145.85 and 70.19 is: 105.33
Step by Step Solution
- Step 1: Write the proportion equation
97.19 : 145.85 = 70.19 : x - Step 2: Convert to fraction form
97.19/145.85 = 70.19/x - Step 3: Cross multiply
97.19x = 145.85 × 70.19 - Step 4: Simplify right side
97.19x = 10,236.13 - Step 5: Solve for x
x = 10,236.13/97.19 - Step 6: Final answer
x = 105.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.