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Finding the Fourth Proportional to 454.26, 679.01 and 393.26

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Solution

The fourth proportional to 454.26, 679.01 and 393.26 is: 587.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.26 : 679.01 = 393.26 : x
  2. Step 2: Convert to fraction form
    454.26/679.01 = 393.26/x
  3. Step 3: Cross multiply
    454.26x = 679.01 × 393.26
  4. Step 4: Simplify right side
    454.26x = 267,022.11
  5. Step 5: Solve for x
    x = 267,022.11/454.26
  6. Step 6: Final answer
    x = 587.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.