Finding the Fourth Proportional to 423.24, 634.74 and 149.28
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Solution
The fourth proportional to 423.24, 634.74 and 149.28 is: 223.88
Step by Step Solution
- Step 1: Write the proportion equation
423.24 : 634.74 = 149.28 : x - Step 2: Convert to fraction form
423.24/634.74 = 149.28/x - Step 3: Cross multiply
423.24x = 634.74 × 149.28 - Step 4: Simplify right side
423.24x = 94,753.99 - Step 5: Solve for x
x = 94,753.99/423.24 - Step 6: Final answer
x = 223.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.