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Finding the Fourth Proportional to 489.44, 731.29 and 472.43

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Solution

The fourth proportional to 489.44, 731.29 and 472.43 is: 705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.44 : 731.29 = 472.43 : x
  2. Step 2: Convert to fraction form
    489.44/731.29 = 472.43/x
  3. Step 3: Cross multiply
    489.44x = 731.29 × 472.43
  4. Step 4: Simplify right side
    489.44x = 345,483.33
  5. Step 5: Solve for x
    x = 345,483.33/489.44
  6. Step 6: Final answer
    x = 705.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.