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Finding the Fourth Proportional to 293.49, 439.59 and 207.21

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Solution

The fourth proportional to 293.49, 439.59 and 207.21 is: 310.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.49 : 439.59 = 207.21 : x
  2. Step 2: Convert to fraction form
    293.49/439.59 = 207.21/x
  3. Step 3: Cross multiply
    293.49x = 439.59 × 207.21
  4. Step 4: Simplify right side
    293.49x = 91,087.44
  5. Step 5: Solve for x
    x = 91,087.44/293.49
  6. Step 6: Final answer
    x = 310.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.