Finding the Fourth Proportional to 261.70, 361.14 and 145.26
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Solution
The fourth proportional to 261.70, 361.14 and 145.26 is: 200.46
Step by Step Solution
- Step 1: Write the proportion equation
261.70 : 361.14 = 145.26 : x - Step 2: Convert to fraction form
261.70/361.14 = 145.26/x - Step 3: Cross multiply
261.70x = 361.14 × 145.26 - Step 4: Simplify right side
261.70x = 52,459.20 - Step 5: Solve for x
x = 52,459.20/261.70 - Step 6: Final answer
x = 200.46
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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.