Finding the Fourth Proportional to 261.19, 392.09 and 151.63
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Solution
The fourth proportional to 261.19, 392.09 and 151.63 is: 227.61
Step by Step Solution
- Step 1: Write the proportion equation
261.19 : 392.09 = 151.63 : x - Step 2: Convert to fraction form
261.19/392.09 = 151.63/x - Step 3: Cross multiply
261.19x = 392.09 × 151.63 - Step 4: Simplify right side
261.19x = 59,450.87 - Step 5: Solve for x
x = 59,450.87/261.19 - Step 6: Final answer
x = 227.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.