Finding the Fourth Proportional to 428.99, 591.62 and 289.26
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Solution
The fourth proportional to 428.99, 591.62 and 289.26 is: 398.92
Step by Step Solution
- Step 1: Write the proportion equation
428.99 : 591.62 = 289.26 : x - Step 2: Convert to fraction form
428.99/591.62 = 289.26/x - Step 3: Cross multiply
428.99x = 591.62 × 289.26 - Step 4: Simplify right side
428.99x = 171,130.55 - Step 5: Solve for x
x = 171,130.55/428.99 - Step 6: Final answer
x = 398.92
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.