Finding the Fourth Proportional to 407.25, 611.02 and 261.07
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Solution
The fourth proportional to 407.25, 611.02 and 261.07 is: 391.70
Step by Step Solution
- Step 1: Write the proportion equation
407.25 : 611.02 = 261.07 : x - Step 2: Convert to fraction form
407.25/611.02 = 261.07/x - Step 3: Cross multiply
407.25x = 611.02 × 261.07 - Step 4: Simplify right side
407.25x = 159,518.99 - Step 5: Solve for x
x = 159,518.99/407.25 - Step 6: Final answer
x = 391.70
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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.