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Finding the Fourth Proportional to 263.12, 394.68 and 92.08

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Solution

The fourth proportional to 263.12, 394.68 and 92.08 is: 138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.12 : 394.68 = 92.08 : x
  2. Step 2: Convert to fraction form
    263.12/394.68 = 92.08/x
  3. Step 3: Cross multiply
    263.12x = 394.68 × 92.08
  4. Step 4: Simplify right side
    263.12x = 36,342.13
  5. Step 5: Solve for x
    x = 36,342.13/263.12
  6. Step 6: Final answer
    x = 138.12

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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.