Finding the Fourth Proportional to 385.21, 530.97 and 252.19
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Solution
The fourth proportional to 385.21, 530.97 and 252.19 is: 347.61
Step by Step Solution
- Step 1: Write the proportion equation
385.21 : 530.97 = 252.19 : x - Step 2: Convert to fraction form
385.21/530.97 = 252.19/x - Step 3: Cross multiply
385.21x = 530.97 × 252.19 - Step 4: Simplify right side
385.21x = 133,902.67 - Step 5: Solve for x
x = 133,902.67/385.21 - Step 6: Final answer
x = 347.61
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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.