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Finding the Fourth Proportional to 148.94, 222.14 and 139.27

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Solution

The fourth proportional to 148.94, 222.14 and 139.27 is: 207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.94 : 222.14 = 139.27 : x
  2. Step 2: Convert to fraction form
    148.94/222.14 = 139.27/x
  3. Step 3: Cross multiply
    148.94x = 222.14 × 139.27
  4. Step 4: Simplify right side
    148.94x = 30,937.65
  5. Step 5: Solve for x
    x = 30,937.65/148.94
  6. Step 6: Final answer
    x = 207.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.