Finding the Fourth Proportional to 145.65, 218.42 and 48.13
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Solution
The fourth proportional to 145.65, 218.42 and 48.13 is: 72.18
Step by Step Solution
- Step 1: Write the proportion equation
145.65 : 218.42 = 48.13 : x - Step 2: Convert to fraction form
145.65/218.42 = 48.13/x - Step 3: Cross multiply
145.65x = 218.42 × 48.13 - Step 4: Simplify right side
145.65x = 10,512.63 - Step 5: Solve for x
x = 10,512.63/145.65 - Step 6: Final answer
x = 72.18
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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.