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Finding the Fourth Proportional to 1,627, 2,440.50 and 394.41

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Solution

The fourth proportional to 1,627, 2,440.50 and 394.41 is: 591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627 : 2,440.50 = 394.41 : x
  2. Step 2: Convert to fraction form
    1,627/2,440.50 = 394.41/x
  3. Step 3: Cross multiply
    1,627x = 2,440.50 × 394.41
  4. Step 4: Simplify right side
    1,627x = 962,545.40
  5. Step 5: Solve for x
    x = 962,545.40/1,627
  6. Step 6: Final answer
    x = 591.61

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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.