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Finding the Fourth Proportional to 263.67, 395.31 and 140.17

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Solution

The fourth proportional to 263.67, 395.31 and 140.17 is: 210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.67 : 395.31 = 140.17 : x
  2. Step 2: Convert to fraction form
    263.67/395.31 = 140.17/x
  3. Step 3: Cross multiply
    263.67x = 395.31 × 140.17
  4. Step 4: Simplify right side
    263.67x = 55,410.60
  5. Step 5: Solve for x
    x = 55,410.60/263.67
  6. Step 6: Final answer
    x = 210.15

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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.