Finding the Fourth Proportional to 624.18, 861.35 and 354.99
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Solution
The fourth proportional to 624.18, 861.35 and 354.99 is: 489.88
Step by Step Solution
- Step 1: Write the proportion equation
624.18 : 861.35 = 354.99 : x - Step 2: Convert to fraction form
624.18/861.35 = 354.99/x - Step 3: Cross multiply
624.18x = 861.35 × 354.99 - Step 4: Simplify right side
624.18x = 305,770.64 - Step 5: Solve for x
x = 305,770.64/624.18 - Step 6: Final answer
x = 489.88
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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.