Finding the Fourth Proportional to 438.98, 605.63 and 281.63
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Solution
The fourth proportional to 438.98, 605.63 and 281.63 is: 388.55
Step by Step Solution
- Step 1: Write the proportion equation
438.98 : 605.63 = 281.63 : x - Step 2: Convert to fraction form
438.98/605.63 = 281.63/x - Step 3: Cross multiply
438.98x = 605.63 × 281.63 - Step 4: Simplify right side
438.98x = 170,565.80 - Step 5: Solve for x
x = 170,565.80/438.98 - Step 6: Final answer
x = 388.55
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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.