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Finding the Fourth Proportional to 149.65, 205.27 and 140.83

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Solution

The fourth proportional to 149.65, 205.27 and 140.83 is: 193.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.65 : 205.27 = 140.83 : x
  2. Step 2: Convert to fraction form
    149.65/205.27 = 140.83/x
  3. Step 3: Cross multiply
    149.65x = 205.27 × 140.83
  4. Step 4: Simplify right side
    149.65x = 28,907.31
  5. Step 5: Solve for x
    x = 28,907.31/149.65
  6. Step 6: Final answer
    x = 193.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.