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Finding the Fourth Proportional to 263.32, 394.77 and 141.65

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Solution

The fourth proportional to 263.32, 394.77 and 141.65 is: 212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.32 : 394.77 = 141.65 : x
  2. Step 2: Convert to fraction form
    263.32/394.77 = 141.65/x
  3. Step 3: Cross multiply
    263.32x = 394.77 × 141.65
  4. Step 4: Simplify right side
    263.32x = 55,919.21
  5. Step 5: Solve for x
    x = 55,919.21/263.32
  6. Step 6: Final answer
    x = 212.36

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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.