Finding the Fourth Proportional to 454.08, 626.76 and 257.70
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Solution
The fourth proportional to 454.08, 626.76 and 257.70 is: 355.70
Step by Step Solution
- Step 1: Write the proportion equation
454.08 : 626.76 = 257.70 : x - Step 2: Convert to fraction form
454.08/626.76 = 257.70/x - Step 3: Cross multiply
454.08x = 626.76 × 257.70 - Step 4: Simplify right side
454.08x = 161,516.05 - Step 5: Solve for x
x = 161,516.05/454.08 - Step 6: Final answer
x = 355.70
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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.