Finding the Fourth Proportional to 425.96, 638.99 and 152.09
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Solution
The fourth proportional to 425.96, 638.99 and 152.09 is: 228.15
Step by Step Solution
- Step 1: Write the proportion equation
425.96 : 638.99 = 152.09 : x - Step 2: Convert to fraction form
425.96/638.99 = 152.09/x - Step 3: Cross multiply
425.96x = 638.99 × 152.09 - Step 4: Simplify right side
425.96x = 97,183.99 - Step 5: Solve for x
x = 97,183.99/425.96 - Step 6: Final answer
x = 228.15
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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.