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Finding the Fourth Proportional to 452.54, 679.48 and 279.95

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Solution

The fourth proportional to 452.54, 679.48 and 279.95 is: 420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.54 : 679.48 = 279.95 : x
  2. Step 2: Convert to fraction form
    452.54/679.48 = 279.95/x
  3. Step 3: Cross multiply
    452.54x = 679.48 × 279.95
  4. Step 4: Simplify right side
    452.54x = 190,216.33
  5. Step 5: Solve for x
    x = 190,216.33/452.54
  6. Step 6: Final answer
    x = 420.33

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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.