Finding the Fourth Proportional to 645.68, 891.17 and 435.99
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Solution
The fourth proportional to 645.68, 891.17 and 435.99 is: 601.76
Step by Step Solution
- Step 1: Write the proportion equation
645.68 : 891.17 = 435.99 : x - Step 2: Convert to fraction form
645.68/891.17 = 435.99/x - Step 3: Cross multiply
645.68x = 891.17 × 435.99 - Step 4: Simplify right side
645.68x = 388,541.21 - Step 5: Solve for x
x = 388,541.21/645.68 - Step 6: Final answer
x = 601.76
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.