Finding the Third Proportional to 660 and 987.50
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Solution
The third proportional to 660 and 987.50 is: 1,477.51
Step by Step Solution
- Step 1: Write the proportion equation
660 : 987.50 = 987.50 : x - Step 2: Convert to fraction form
660/987.50 = 987.50/x - Step 3: Cross multiply
660x = 987.50 × 987.50 - Step 4: Simplify right side
660x = 975,156.25 - Step 5: Solve for x
x = 975,156.25/660 - Step 6: Final answer
x = 1,477.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.