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Finding the Fourth Proportional to 439.84, 606.72 and 352.96

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Solution

The fourth proportional to 439.84, 606.72 and 352.96 is: 486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.84 : 606.72 = 352.96 : x
  2. Step 2: Convert to fraction form
    439.84/606.72 = 352.96/x
  3. Step 3: Cross multiply
    439.84x = 606.72 × 352.96
  4. Step 4: Simplify right side
    439.84x = 214,147.89
  5. Step 5: Solve for x
    x = 214,147.89/439.84
  6. Step 6: Final answer
    x = 486.88

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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.