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Finding the Fourth Proportional to 144.90, 200.43 and 127.65

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Solution

The fourth proportional to 144.90, 200.43 and 127.65 is: 176.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.90 : 200.43 = 127.65 : x
  2. Step 2: Convert to fraction form
    144.90/200.43 = 127.65/x
  3. Step 3: Cross multiply
    144.90x = 200.43 × 127.65
  4. Step 4: Simplify right side
    144.90x = 25,584.89
  5. Step 5: Solve for x
    x = 25,584.89/144.90
  6. Step 6: Final answer
    x = 176.57

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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.