Finding the Fourth Proportional to 437.22, 655.67 and 128.99
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Solution
The fourth proportional to 437.22, 655.67 and 128.99 is: 193.44
Step by Step Solution
- Step 1: Write the proportion equation
437.22 : 655.67 = 128.99 : x - Step 2: Convert to fraction form
437.22/655.67 = 128.99/x - Step 3: Cross multiply
437.22x = 655.67 × 128.99 - Step 4: Simplify right side
437.22x = 84,574.87 - Step 5: Solve for x
x = 84,574.87/437.22 - Step 6: Final answer
x = 193.44
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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.