Finding the Fourth Proportional to 45.29, 67.84 and 38.05
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Solution
The fourth proportional to 45.29, 67.84 and 38.05 is: 56.99
Step by Step Solution
- Step 1: Write the proportion equation
45.29 : 67.84 = 38.05 : x - Step 2: Convert to fraction form
45.29/67.84 = 38.05/x - Step 3: Cross multiply
45.29x = 67.84 × 38.05 - Step 4: Simplify right side
45.29x = 2,581.05 - Step 5: Solve for x
x = 2,581.05/45.29 - Step 6: Final answer
x = 56.99
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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.