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Finding the Fourth Proportional to 247.72, 341.79 and 214.91

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Solution

The fourth proportional to 247.72, 341.79 and 214.91 is: 296.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.72 : 341.79 = 214.91 : x
  2. Step 2: Convert to fraction form
    247.72/341.79 = 214.91/x
  3. Step 3: Cross multiply
    247.72x = 341.79 × 214.91
  4. Step 4: Simplify right side
    247.72x = 73,454.09
  5. Step 5: Solve for x
    x = 73,454.09/247.72
  6. Step 6: Final answer
    x = 296.52

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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.