Finding the Fourth Proportional to 422.60, 583.62 and 324.68
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Solution
The fourth proportional to 422.60, 583.62 and 324.68 is: 448.39
Step by Step Solution
- Step 1: Write the proportion equation
422.60 : 583.62 = 324.68 : x - Step 2: Convert to fraction form
422.60/583.62 = 324.68/x - Step 3: Cross multiply
422.60x = 583.62 × 324.68 - Step 4: Simplify right side
422.60x = 189,489.74 - Step 5: Solve for x
x = 189,489.74/422.60 - Step 6: Final answer
x = 448.39
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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.