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Finding the Fourth Proportional to 250.20, 345.61 and 192.70

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Solution

The fourth proportional to 250.20, 345.61 and 192.70 is: 266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.20 : 345.61 = 192.70 : x
  2. Step 2: Convert to fraction form
    250.20/345.61 = 192.70/x
  3. Step 3: Cross multiply
    250.20x = 345.61 × 192.70
  4. Step 4: Simplify right side
    250.20x = 66,599.05
  5. Step 5: Solve for x
    x = 66,599.05/250.20
  6. Step 6: Final answer
    x = 266.18

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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.