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Finding the Fourth Proportional to 144.56, 199.56 and 92.72

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Solution

The fourth proportional to 144.56, 199.56 and 92.72 is: 128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.56 : 199.56 = 92.72 : x
  2. Step 2: Convert to fraction form
    144.56/199.56 = 92.72/x
  3. Step 3: Cross multiply
    144.56x = 199.56 × 92.72
  4. Step 4: Simplify right side
    144.56x = 18,503.20
  5. Step 5: Solve for x
    x = 18,503.20/144.56
  6. Step 6: Final answer
    x = 128.00

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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.