Finding the Fourth Proportional to 57.76, 79.67 and 38.09
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Solution
The fourth proportional to 57.76, 79.67 and 38.09 is: 52.53
Step by Step Solution
- Step 1: Write the proportion equation
57.76 : 79.67 = 38.09 : x - Step 2: Convert to fraction form
57.76/79.67 = 38.09/x - Step 3: Cross multiply
57.76x = 79.67 × 38.09 - Step 4: Simplify right side
57.76x = 3,034.04 - Step 5: Solve for x
x = 3,034.04/57.76 - Step 6: Final answer
x = 52.53
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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.