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Finding the Fourth Proportional to 452.85, 674.60 and 439.26

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Solution

The fourth proportional to 452.85, 674.60 and 439.26 is: 654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.85 : 674.60 = 439.26 : x
  2. Step 2: Convert to fraction form
    452.85/674.60 = 439.26/x
  3. Step 3: Cross multiply
    452.85x = 674.60 × 439.26
  4. Step 4: Simplify right side
    452.85x = 296,322.60
  5. Step 5: Solve for x
    x = 296,322.60/452.85
  6. Step 6: Final answer
    x = 654.35

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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.