Finding the Fourth Proportional to 261.86, 361.35 and 239.99
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Solution
The fourth proportional to 261.86, 361.35 and 239.99 is: 331.17
Step by Step Solution
- Step 1: Write the proportion equation
261.86 : 361.35 = 239.99 : x - Step 2: Convert to fraction form
261.86/361.35 = 239.99/x - Step 3: Cross multiply
261.86x = 361.35 × 239.99 - Step 4: Simplify right side
261.86x = 86,718.58 - Step 5: Solve for x
x = 86,718.58/261.86 - Step 6: Final answer
x = 331.17
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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.