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Finding the Fourth Proportional to 999.22, 1,498.84 and 382.95

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Solution

The fourth proportional to 999.22, 1,498.84 and 382.95 is: 574.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.22 : 1,498.84 = 382.95 : x
  2. Step 2: Convert to fraction form
    999.22/1,498.84 = 382.95/x
  3. Step 3: Cross multiply
    999.22x = 1,498.84 × 382.95
  4. Step 4: Simplify right side
    999.22x = 573,981.69
  5. Step 5: Solve for x
    x = 573,981.69/999.22
  6. Step 6: Final answer
    x = 574.43

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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.