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Finding the Fourth Proportional to 492.48, 679.49 and 295.95

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Solution

The fourth proportional to 492.48, 679.49 and 295.95 is: 408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.48 : 679.49 = 295.95 : x
  2. Step 2: Convert to fraction form
    492.48/679.49 = 295.95/x
  3. Step 3: Cross multiply
    492.48x = 679.49 × 295.95
  4. Step 4: Simplify right side
    492.48x = 201,097.24
  5. Step 5: Solve for x
    x = 201,097.24/492.48
  6. Step 6: Final answer
    x = 408.34

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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.