Finding the Fourth Proportional to 145.99, 218.58 and 73.70
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Solution
The fourth proportional to 145.99, 218.58 and 73.70 is: 110.34
Step by Step Solution
- Step 1: Write the proportion equation
145.99 : 218.58 = 73.70 : x - Step 2: Convert to fraction form
145.99/218.58 = 73.70/x - Step 3: Cross multiply
145.99x = 218.58 × 73.70 - Step 4: Simplify right side
145.99x = 16,107.98 - Step 5: Solve for x
x = 16,107.98/145.99 - Step 6: Final answer
x = 110.34
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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.