Finding the Fourth Proportional to 258, 386.52 and 155.31
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Solution
The fourth proportional to 258, 386.52 and 155.31 is: 232.68
Step by Step Solution
- Step 1: Write the proportion equation
258 : 386.52 = 155.31 : x - Step 2: Convert to fraction form
258/386.52 = 155.31/x - Step 3: Cross multiply
258x = 386.52 × 155.31 - Step 4: Simplify right side
258x = 60,030.42 - Step 5: Solve for x
x = 60,030.42/258 - Step 6: Final answer
x = 232.68
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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.