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Finding the Fourth Proportional to 344.80, 517.32 and 320.32

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Solution

The fourth proportional to 344.80, 517.32 and 320.32 is: 480.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.80 : 517.32 = 320.32 : x
  2. Step 2: Convert to fraction form
    344.80/517.32 = 320.32/x
  3. Step 3: Cross multiply
    344.80x = 517.32 × 320.32
  4. Step 4: Simplify right side
    344.80x = 165,707.94
  5. Step 5: Solve for x
    x = 165,707.94/344.80
  6. Step 6: Final answer
    x = 480.59

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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.