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Finding the Fourth Proportional to 207.06, 285.43 and 144.79

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Solution

The fourth proportional to 207.06, 285.43 and 144.79 is: 199.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.06 : 285.43 = 144.79 : x
  2. Step 2: Convert to fraction form
    207.06/285.43 = 144.79/x
  3. Step 3: Cross multiply
    207.06x = 285.43 × 144.79
  4. Step 4: Simplify right side
    207.06x = 41,327.41
  5. Step 5: Solve for x
    x = 41,327.41/207.06
  6. Step 6: Final answer
    x = 199.59

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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.