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Finding the Fourth Proportional to 255.56, 350.73 and 230.95

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Solution

The fourth proportional to 255.56, 350.73 and 230.95 is: 316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.56 : 350.73 = 230.95 : x
  2. Step 2: Convert to fraction form
    255.56/350.73 = 230.95/x
  3. Step 3: Cross multiply
    255.56x = 350.73 × 230.95
  4. Step 4: Simplify right side
    255.56x = 81,001.53
  5. Step 5: Solve for x
    x = 81,001.53/255.56
  6. Step 6: Final answer
    x = 316.96

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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.