Finding the Fourth Proportional to 42.49, 63.98 and 38.26
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Solution
The fourth proportional to 42.49, 63.98 and 38.26 is: 57.61
Step by Step Solution
- Step 1: Write the proportion equation
42.49 : 63.98 = 38.26 : x - Step 2: Convert to fraction form
42.49/63.98 = 38.26/x - Step 3: Cross multiply
42.49x = 63.98 × 38.26 - Step 4: Simplify right side
42.49x = 2,447.55 - Step 5: Solve for x
x = 2,447.55/42.49 - Step 6: Final answer
x = 57.61
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.