Finding the Fourth Proportional to 68.60, 102.90 and 58.88
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Solution
The fourth proportional to 68.60, 102.90 and 58.88 is: 88.32
Step by Step Solution
- Step 1: Write the proportion equation
68.60 : 102.90 = 58.88 : x - Step 2: Convert to fraction form
68.60/102.90 = 58.88/x - Step 3: Cross multiply
68.60x = 102.90 × 58.88 - Step 4: Simplify right side
68.60x = 6,058.24 - Step 5: Solve for x
x = 6,058.24/68.60 - Step 6: Final answer
x = 88.32
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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.