Finding the Third Proportional to 258 and 402
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Solution
The third proportional to 258 and 402 is: 626.37
Step by Step Solution
- Step 1: Write the proportion equation
258 : 402 = 402 : x - Step 2: Convert to fraction form
258/402 = 402/x - Step 3: Cross multiply
258x = 402 × 402 - Step 4: Simplify right side
258x = 161,604 - Step 5: Solve for x
x = 161,604/258 - Step 6: Final answer
x = 626.37
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These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.