Finding the Fourth Proportional to 131.42, 181.33 and 73.19
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Solution
The fourth proportional to 131.42, 181.33 and 73.19 is: 100.99
Step by Step Solution
- Step 1: Write the proportion equation
131.42 : 181.33 = 73.19 : x - Step 2: Convert to fraction form
131.42/181.33 = 73.19/x - Step 3: Cross multiply
131.42x = 181.33 × 73.19 - Step 4: Simplify right side
131.42x = 13,271.54 - Step 5: Solve for x
x = 13,271.54/131.42 - Step 6: Final answer
x = 100.99
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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.