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Finding the Fourth Proportional to 454.43, 680.68 and 343.52

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Solution

The fourth proportional to 454.43, 680.68 and 343.52 is: 514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.43 : 680.68 = 343.52 : x
  2. Step 2: Convert to fraction form
    454.43/680.68 = 343.52/x
  3. Step 3: Cross multiply
    454.43x = 680.68 × 343.52
  4. Step 4: Simplify right side
    454.43x = 233,825.48
  5. Step 5: Solve for x
    x = 233,825.48/454.43
  6. Step 6: Final answer
    x = 514.55

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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.