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Finding the Fourth Proportional to 86.33, 119.10 and 49.48

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Solution

The fourth proportional to 86.33, 119.10 and 49.48 is: 68.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.33 : 119.10 = 49.48 : x
  2. Step 2: Convert to fraction form
    86.33/119.10 = 49.48/x
  3. Step 3: Cross multiply
    86.33x = 119.10 × 49.48
  4. Step 4: Simplify right side
    86.33x = 5,893.21
  5. Step 5: Solve for x
    x = 5,893.21/86.33
  6. Step 6: Final answer
    x = 68.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.