Finding the Fourth Proportional to 669.29, 921.74 and 576
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Solution
The fourth proportional to 669.29, 921.74 and 576 is: 793.26
Step by Step Solution
- Step 1: Write the proportion equation
669.29 : 921.74 = 576 : x - Step 2: Convert to fraction form
669.29/921.74 = 576/x - Step 3: Cross multiply
669.29x = 921.74 × 576 - Step 4: Simplify right side
669.29x = 530,919.36 - Step 5: Solve for x
x = 530,919.36/669.29 - Step 6: Final answer
x = 793.26
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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.