Finding the Fourth Proportional to 422.81, 630.99 and 376.68
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Solution
The fourth proportional to 422.81, 630.99 and 376.68 is: 562.14
Step by Step Solution
- Step 1: Write the proportion equation
422.81 : 630.99 = 376.68 : x - Step 2: Convert to fraction form
422.81/630.99 = 376.68/x - Step 3: Cross multiply
422.81x = 630.99 × 376.68 - Step 4: Simplify right side
422.81x = 237,681.31 - Step 5: Solve for x
x = 237,681.31/422.81 - Step 6: Final answer
x = 562.14
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.