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Finding the Fourth Proportional to 321.73, 444.20 and 247.93

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Solution

The fourth proportional to 321.73, 444.20 and 247.93 is: 342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.73 : 444.20 = 247.93 : x
  2. Step 2: Convert to fraction form
    321.73/444.20 = 247.93/x
  3. Step 3: Cross multiply
    321.73x = 444.20 × 247.93
  4. Step 4: Simplify right side
    321.73x = 110,128.16
  5. Step 5: Solve for x
    x = 110,128.16/321.73
  6. Step 6: Final answer
    x = 342.30

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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.