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Finding the Fourth Proportional to 439.63, 660.36 and 348.96

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Solution

The fourth proportional to 439.63, 660.36 and 348.96 is: 524.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.63 : 660.36 = 348.96 : x
  2. Step 2: Convert to fraction form
    439.63/660.36 = 348.96/x
  3. Step 3: Cross multiply
    439.63x = 660.36 × 348.96
  4. Step 4: Simplify right side
    439.63x = 230,439.23
  5. Step 5: Solve for x
    x = 230,439.23/439.63
  6. Step 6: Final answer
    x = 524.17

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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.