Finding the Fourth Proportional to 254.24, 381.05 and 145.70
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Solution
The fourth proportional to 254.24, 381.05 and 145.70 is: 218.37
Step by Step Solution
- Step 1: Write the proportion equation
254.24 : 381.05 = 145.70 : x - Step 2: Convert to fraction form
254.24/381.05 = 145.70/x - Step 3: Cross multiply
254.24x = 381.05 × 145.70 - Step 4: Simplify right side
254.24x = 55,518.99 - Step 5: Solve for x
x = 55,518.99/254.24 - Step 6: Final answer
x = 218.37
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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.