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Finding the Fourth Proportional to 492.74, 679.97 and 268.67

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Solution

The fourth proportional to 492.74, 679.97 and 268.67 is: 370.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.74 : 679.97 = 268.67 : x
  2. Step 2: Convert to fraction form
    492.74/679.97 = 268.67/x
  3. Step 3: Cross multiply
    492.74x = 679.97 × 268.67
  4. Step 4: Simplify right side
    492.74x = 182,688.57
  5. Step 5: Solve for x
    x = 182,688.57/492.74
  6. Step 6: Final answer
    x = 370.76

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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.