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Finding the Fourth Proportional to 263.56, 394.90 and 186.14

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Solution

The fourth proportional to 263.56, 394.90 and 186.14 is: 278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.56 : 394.90 = 186.14 : x
  2. Step 2: Convert to fraction form
    263.56/394.90 = 186.14/x
  3. Step 3: Cross multiply
    263.56x = 394.90 × 186.14
  4. Step 4: Simplify right side
    263.56x = 73,506.69
  5. Step 5: Solve for x
    x = 73,506.69/263.56
  6. Step 6: Final answer
    x = 278.90

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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.