Finding the Fourth Proportional to 115.24, 157.91 and 115.06
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Solution
The fourth proportional to 115.24, 157.91 and 115.06 is: 157.66
Step by Step Solution
- Step 1: Write the proportion equation
115.24 : 157.91 = 115.06 : x - Step 2: Convert to fraction form
115.24/157.91 = 115.06/x - Step 3: Cross multiply
115.24x = 157.91 × 115.06 - Step 4: Simplify right side
115.24x = 18,169.12 - Step 5: Solve for x
x = 18,169.12/115.24 - Step 6: Final answer
x = 157.66
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.