Finding the Fourth Proportional to 154.52, 231.80 and 69
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Solution
The fourth proportional to 154.52, 231.80 and 69 is: 103.51
Step by Step Solution
- Step 1: Write the proportion equation
154.52 : 231.80 = 69 : x - Step 2: Convert to fraction form
154.52/231.80 = 69/x - Step 3: Cross multiply
154.52x = 231.80 × 69 - Step 4: Simplify right side
154.52x = 15,994.20 - Step 5: Solve for x
x = 15,994.20/154.52 - Step 6: Final answer
x = 103.51
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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.