Finding the Fourth Proportional to 53.30, 79.82 and 38.08
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Solution
The fourth proportional to 53.30, 79.82 and 38.08 is: 57.02
Step by Step Solution
- Step 1: Write the proportion equation
53.30 : 79.82 = 38.08 : x - Step 2: Convert to fraction form
53.30/79.82 = 38.08/x - Step 3: Cross multiply
53.30x = 79.82 × 38.08 - Step 4: Simplify right side
53.30x = 3,039.15 - Step 5: Solve for x
x = 3,039.15/53.30 - Step 6: Final answer
x = 57.02
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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.