Finding the Fourth Proportional to 374.58, 561.36 and 309.99
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Solution
The fourth proportional to 374.58, 561.36 and 309.99 is: 464.56
Step by Step Solution
- Step 1: Write the proportion equation
374.58 : 561.36 = 309.99 : x - Step 2: Convert to fraction form
374.58/561.36 = 309.99/x - Step 3: Cross multiply
374.58x = 561.36 × 309.99 - Step 4: Simplify right side
374.58x = 174,015.99 - Step 5: Solve for x
x = 174,015.99/374.58 - Step 6: Final answer
x = 464.56
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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.