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Finding the Fourth Proportional to 492.27, 679.12 and 326.51

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Solution

The fourth proportional to 492.27, 679.12 and 326.51 is: 450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.27 : 679.12 = 326.51 : x
  2. Step 2: Convert to fraction form
    492.27/679.12 = 326.51/x
  3. Step 3: Cross multiply
    492.27x = 679.12 × 326.51
  4. Step 4: Simplify right side
    492.27x = 221,737.84
  5. Step 5: Solve for x
    x = 221,737.84/492.27
  6. Step 6: Final answer
    x = 450.44

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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.