Finding the Fourth Proportional to 156.79, 216.42 and 101.48
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Solution
The fourth proportional to 156.79, 216.42 and 101.48 is: 140.07
Step by Step Solution
- Step 1: Write the proportion equation
156.79 : 216.42 = 101.48 : x - Step 2: Convert to fraction form
156.79/216.42 = 101.48/x - Step 3: Cross multiply
156.79x = 216.42 × 101.48 - Step 4: Simplify right side
156.79x = 21,962.30 - Step 5: Solve for x
x = 21,962.30/156.79 - Step 6: Final answer
x = 140.07
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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.