Finding the Fourth Proportional to 258.18, 387.99 and 177.54
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Solution
The fourth proportional to 258.18, 387.99 and 177.54 is: 266.81
Step by Step Solution
- Step 1: Write the proportion equation
258.18 : 387.99 = 177.54 : x - Step 2: Convert to fraction form
258.18/387.99 = 177.54/x - Step 3: Cross multiply
258.18x = 387.99 × 177.54 - Step 4: Simplify right side
258.18x = 68,883.74 - Step 5: Solve for x
x = 68,883.74/258.18 - Step 6: Final answer
x = 266.81
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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.