Finding the Fourth Proportional to 630.72, 945.84 and 357
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Solution
The fourth proportional to 630.72, 945.84 and 357 is: 535.36
Step by Step Solution
- Step 1: Write the proportion equation
630.72 : 945.84 = 357 : x - Step 2: Convert to fraction form
630.72/945.84 = 357/x - Step 3: Cross multiply
630.72x = 945.84 × 357 - Step 4: Simplify right side
630.72x = 337,664.88 - Step 5: Solve for x
x = 337,664.88/630.72 - Step 6: Final answer
x = 535.36
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.