Finding the Fourth Proportional to 111.08, 153.24 and 69.65
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Solution
The fourth proportional to 111.08, 153.24 and 69.65 is: 96.09
Step by Step Solution
- Step 1: Write the proportion equation
111.08 : 153.24 = 69.65 : x - Step 2: Convert to fraction form
111.08/153.24 = 69.65/x - Step 3: Cross multiply
111.08x = 153.24 × 69.65 - Step 4: Simplify right side
111.08x = 10,672.71 - Step 5: Solve for x
x = 10,672.71/111.08 - Step 6: Final answer
x = 96.09
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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.