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Finding the Fourth Proportional to 247.04, 340.14 and 217.51

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Solution

The fourth proportional to 247.04, 340.14 and 217.51 is: 299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.04 : 340.14 = 217.51 : x
  2. Step 2: Convert to fraction form
    247.04/340.14 = 217.51/x
  3. Step 3: Cross multiply
    247.04x = 340.14 × 217.51
  4. Step 4: Simplify right side
    247.04x = 73,984.68
  5. Step 5: Solve for x
    x = 73,984.68/247.04
  6. Step 6: Final answer
    x = 299.48

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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.