Finding the Fourth Proportional to 380.60, 525.18 and 338.99
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Solution
The fourth proportional to 380.60, 525.18 and 338.99 is: 467.76
Step by Step Solution
- Step 1: Write the proportion equation
380.60 : 525.18 = 338.99 : x - Step 2: Convert to fraction form
380.60/525.18 = 338.99/x - Step 3: Cross multiply
380.60x = 525.18 × 338.99 - Step 4: Simplify right side
380.60x = 178,029.41 - Step 5: Solve for x
x = 178,029.41/380.60 - Step 6: Final answer
x = 467.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.