Finding the Fourth Proportional to 379.23, 569.08 and 135.78
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Solution
The fourth proportional to 379.23, 569.08 and 135.78 is: 203.75
Step by Step Solution
- Step 1: Write the proportion equation
379.23 : 569.08 = 135.78 : x - Step 2: Convert to fraction form
379.23/569.08 = 135.78/x - Step 3: Cross multiply
379.23x = 569.08 × 135.78 - Step 4: Simplify right side
379.23x = 77,266.95 - Step 5: Solve for x
x = 77,266.95/379.23 - Step 6: Final answer
x = 203.75
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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.