Finding the Fourth Proportional to 56.39, 84.50 and 38.09
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Solution
The fourth proportional to 56.39, 84.50 and 38.09 is: 57.07
Step by Step Solution
- Step 1: Write the proportion equation
56.39 : 84.50 = 38.09 : x - Step 2: Convert to fraction form
56.39/84.50 = 38.09/x - Step 3: Cross multiply
56.39x = 84.50 × 38.09 - Step 4: Simplify right side
56.39x = 3,218.13 - Step 5: Solve for x
x = 3,218.13/56.39 - Step 6: Final answer
x = 57.07
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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.