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Finding the Fourth Proportional to 552.70, 764.61 and 454.26

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Solution

The fourth proportional to 552.70, 764.61 and 454.26 is: 628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.70 : 764.61 = 454.26 : x
  2. Step 2: Convert to fraction form
    552.70/764.61 = 454.26/x
  3. Step 3: Cross multiply
    552.70x = 764.61 × 454.26
  4. Step 4: Simplify right side
    552.70x = 347,331.74
  5. Step 5: Solve for x
    x = 347,331.74/552.70
  6. Step 6: Final answer
    x = 628.43

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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.