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Finding the Fourth Proportional to 185.10, 277.37 and 139.41

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Solution

The fourth proportional to 185.10, 277.37 and 139.41 is: 208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.10 : 277.37 = 139.41 : x
  2. Step 2: Convert to fraction form
    185.10/277.37 = 139.41/x
  3. Step 3: Cross multiply
    185.10x = 277.37 × 139.41
  4. Step 4: Simplify right side
    185.10x = 38,668.15
  5. Step 5: Solve for x
    x = 38,668.15/185.10
  6. Step 6: Final answer
    x = 208.90

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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.