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Finding the Fourth Proportional to 265.24, 397.14 and 219.79

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Solution

The fourth proportional to 265.24, 397.14 and 219.79 is: 329.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.24 : 397.14 = 219.79 : x
  2. Step 2: Convert to fraction form
    265.24/397.14 = 219.79/x
  3. Step 3: Cross multiply
    265.24x = 397.14 × 219.79
  4. Step 4: Simplify right side
    265.24x = 87,287.40
  5. Step 5: Solve for x
    x = 87,287.40/265.24
  6. Step 6: Final answer
    x = 329.09

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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.