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Finding the Fourth Proportional to 275.43, 380.01 and 157.41

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Solution

The fourth proportional to 275.43, 380.01 and 157.41 is: 217.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.43 : 380.01 = 157.41 : x
  2. Step 2: Convert to fraction form
    275.43/380.01 = 157.41/x
  3. Step 3: Cross multiply
    275.43x = 380.01 × 157.41
  4. Step 4: Simplify right side
    275.43x = 59,817.37
  5. Step 5: Solve for x
    x = 59,817.37/275.43
  6. Step 6: Final answer
    x = 217.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.