Finding the Fourth Proportional to 45.46, 67.79 and 42.99
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Solution
The fourth proportional to 45.46, 67.79 and 42.99 is: 64.11
Step by Step Solution
- Step 1: Write the proportion equation
45.46 : 67.79 = 42.99 : x - Step 2: Convert to fraction form
45.46/67.79 = 42.99/x - Step 3: Cross multiply
45.46x = 67.79 × 42.99 - Step 4: Simplify right side
45.46x = 2,914.29 - Step 5: Solve for x
x = 2,914.29/45.46 - Step 6: Final answer
x = 64.11
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.