Finding the Fourth Proportional to 135.15, 202.74 and 58.11
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Solution
The fourth proportional to 135.15, 202.74 and 58.11 is: 87.17
Step by Step Solution
- Step 1: Write the proportion equation
135.15 : 202.74 = 58.11 : x - Step 2: Convert to fraction form
135.15/202.74 = 58.11/x - Step 3: Cross multiply
135.15x = 202.74 × 58.11 - Step 4: Simplify right side
135.15x = 11,781.22 - Step 5: Solve for x
x = 11,781.22/135.15 - Step 6: Final answer
x = 87.17
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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.