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Finding the Fourth Proportional to 263.32, 394.65 and 141.35

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Solution

The fourth proportional to 263.32, 394.65 and 141.35 is: 211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.32 : 394.65 = 141.35 : x
  2. Step 2: Convert to fraction form
    263.32/394.65 = 141.35/x
  3. Step 3: Cross multiply
    263.32x = 394.65 × 141.35
  4. Step 4: Simplify right side
    263.32x = 55,783.78
  5. Step 5: Solve for x
    x = 55,783.78/263.32
  6. Step 6: Final answer
    x = 211.85

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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.