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Finding the Fourth Proportional to 492, 679.06 and 292.87

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Solution

The fourth proportional to 492, 679.06 and 292.87 is: 404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    492 : 679.06 = 292.87 : x
  2. Step 2: Convert to fraction form
    492/679.06 = 292.87/x
  3. Step 3: Cross multiply
    492x = 679.06 × 292.87
  4. Step 4: Simplify right side
    492x = 198,874.84
  5. Step 5: Solve for x
    x = 198,874.84/492
  6. Step 6: Final answer
    x = 404.22

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.