Finding the Fourth Proportional to 106.68, 147.15 and 62.99
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Solution
The fourth proportional to 106.68, 147.15 and 62.99 is: 86.88
Step by Step Solution
- Step 1: Write the proportion equation
106.68 : 147.15 = 62.99 : x - Step 2: Convert to fraction form
106.68/147.15 = 62.99/x - Step 3: Cross multiply
106.68x = 147.15 × 62.99 - Step 4: Simplify right side
106.68x = 9,268.24 - Step 5: Solve for x
x = 9,268.24/106.68 - Step 6: Final answer
x = 86.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.