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Finding the Fourth Proportional to 263.10, 394.72 and 100.83

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Solution

The fourth proportional to 263.10, 394.72 and 100.83 is: 151.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.10 : 394.72 = 100.83 : x
  2. Step 2: Convert to fraction form
    263.10/394.72 = 100.83/x
  3. Step 3: Cross multiply
    263.10x = 394.72 × 100.83
  4. Step 4: Simplify right side
    263.10x = 39,799.62
  5. Step 5: Solve for x
    x = 39,799.62/263.10
  6. Step 6: Final answer
    x = 151.27

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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.