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Finding the Fourth Proportional to 250.64, 345.84 and 140.09

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Solution

The fourth proportional to 250.64, 345.84 and 140.09 is: 193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.64 : 345.84 = 140.09 : x
  2. Step 2: Convert to fraction form
    250.64/345.84 = 140.09/x
  3. Step 3: Cross multiply
    250.64x = 345.84 × 140.09
  4. Step 4: Simplify right side
    250.64x = 48,448.73
  5. Step 5: Solve for x
    x = 48,448.73/250.64
  6. Step 6: Final answer
    x = 193.30

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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.