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Finding the Fourth Proportional to 489.29, 733.38 and 228.98

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Solution

The fourth proportional to 489.29, 733.38 and 228.98 is: 343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.29 : 733.38 = 228.98 : x
  2. Step 2: Convert to fraction form
    489.29/733.38 = 228.98/x
  3. Step 3: Cross multiply
    489.29x = 733.38 × 228.98
  4. Step 4: Simplify right side
    489.29x = 167,929.35
  5. Step 5: Solve for x
    x = 167,929.35/489.29
  6. Step 6: Final answer
    x = 343.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.