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Finding the Fourth Proportional to 250.59, 345.36 and 220.83

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Solution

The fourth proportional to 250.59, 345.36 and 220.83 is: 304.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.59 : 345.36 = 220.83 : x
  2. Step 2: Convert to fraction form
    250.59/345.36 = 220.83/x
  3. Step 3: Cross multiply
    250.59x = 345.36 × 220.83
  4. Step 4: Simplify right side
    250.59x = 76,265.38
  5. Step 5: Solve for x
    x = 76,265.38/250.59
  6. Step 6: Final answer
    x = 304.34

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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.