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Finding the Fourth Proportional to 250.74, 374.73 and 231.28

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Solution

The fourth proportional to 250.74, 374.73 and 231.28 is: 345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.74 : 374.73 = 231.28 : x
  2. Step 2: Convert to fraction form
    250.74/374.73 = 231.28/x
  3. Step 3: Cross multiply
    250.74x = 374.73 × 231.28
  4. Step 4: Simplify right side
    250.74x = 86,667.55
  5. Step 5: Solve for x
    x = 86,667.55/250.74
  6. Step 6: Final answer
    x = 345.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.