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Finding the Fourth Proportional to 250.74, 345.69 and 203.94

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Solution

The fourth proportional to 250.74, 345.69 and 203.94 is: 281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.74 : 345.69 = 203.94 : x
  2. Step 2: Convert to fraction form
    250.74/345.69 = 203.94/x
  3. Step 3: Cross multiply
    250.74x = 345.69 × 203.94
  4. Step 4: Simplify right side
    250.74x = 70,500.02
  5. Step 5: Solve for x
    x = 70,500.02/250.74
  6. Step 6: Final answer
    x = 281.17

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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.