Finding the Fourth Proportional to 47.49, 65.15 and 45.19
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Solution
The fourth proportional to 47.49, 65.15 and 45.19 is: 61.99
Step by Step Solution
- Step 1: Write the proportion equation
47.49 : 65.15 = 45.19 : x - Step 2: Convert to fraction form
47.49/65.15 = 45.19/x - Step 3: Cross multiply
47.49x = 65.15 × 45.19 - Step 4: Simplify right side
47.49x = 2,944.13 - Step 5: Solve for x
x = 2,944.13/47.49 - Step 6: Final answer
x = 61.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.