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Finding the Fourth Proportional to 454.05, 626.64 and 343.35

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Solution

The fourth proportional to 454.05, 626.64 and 343.35 is: 473.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.05 : 626.64 = 343.35 : x
  2. Step 2: Convert to fraction form
    454.05/626.64 = 343.35/x
  3. Step 3: Cross multiply
    454.05x = 626.64 × 343.35
  4. Step 4: Simplify right side
    454.05x = 215,155.56
  5. Step 5: Solve for x
    x = 215,155.56/454.05
  6. Step 6: Final answer
    x = 473.86

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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.