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Finding the Fourth Proportional to 227.13, 313.46 and 139.83

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Solution

The fourth proportional to 227.13, 313.46 and 139.83 is: 192.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.13 : 313.46 = 139.83 : x
  2. Step 2: Convert to fraction form
    227.13/313.46 = 139.83/x
  3. Step 3: Cross multiply
    227.13x = 313.46 × 139.83
  4. Step 4: Simplify right side
    227.13x = 43,831.11
  5. Step 5: Solve for x
    x = 43,831.11/227.13
  6. Step 6: Final answer
    x = 192.98

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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.