Finding the Fourth Proportional to 732.21, 1,102.70 and 642
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Solution
The fourth proportional to 732.21, 1,102.70 and 642 is: 966.84
Step by Step Solution
- Step 1: Write the proportion equation
732.21 : 1,102.70 = 642 : x - Step 2: Convert to fraction form
732.21/1,102.70 = 642/x - Step 3: Cross multiply
732.21x = 1,102.70 × 642 - Step 4: Simplify right side
732.21x = 707,930.19 - Step 5: Solve for x
x = 707,930.19/732.21 - Step 6: Final answer
x = 966.84
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.