Finding the Fourth Proportional to 430.22, 646.35 and 276.44
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Solution
The fourth proportional to 430.22, 646.35 and 276.44 is: 415.32
Step by Step Solution
- Step 1: Write the proportion equation
430.22 : 646.35 = 276.44 : x - Step 2: Convert to fraction form
430.22/646.35 = 276.44/x - Step 3: Cross multiply
430.22x = 646.35 × 276.44 - Step 4: Simplify right side
430.22x = 178,676.99 - Step 5: Solve for x
x = 178,676.99/430.22 - Step 6: Final answer
x = 415.32
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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.