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Finding the Fourth Proportional to 263.21, 394.79 and 160.16

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Solution

The fourth proportional to 263.21, 394.79 and 160.16 is: 240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.21 : 394.79 = 160.16 : x
  2. Step 2: Convert to fraction form
    263.21/394.79 = 160.16/x
  3. Step 3: Cross multiply
    263.21x = 394.79 × 160.16
  4. Step 4: Simplify right side
    263.21x = 63,229.57
  5. Step 5: Solve for x
    x = 63,229.57/263.21
  6. Step 6: Final answer
    x = 240.23

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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.