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Finding the Fourth Proportional to 452.44, 679.88 and 439.08

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Solution

The fourth proportional to 452.44, 679.88 and 439.08 is: 659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.44 : 679.88 = 439.08 : x
  2. Step 2: Convert to fraction form
    452.44/679.88 = 439.08/x
  3. Step 3: Cross multiply
    452.44x = 679.88 × 439.08
  4. Step 4: Simplify right side
    452.44x = 298,521.71
  5. Step 5: Solve for x
    x = 298,521.71/452.44
  6. Step 6: Final answer
    x = 659.80

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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.