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Finding the Fourth Proportional to 999.22, 1,498.91 and 340.83

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Solution

The fourth proportional to 999.22, 1,498.91 and 340.83 is: 511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.22 : 1,498.91 = 340.83 : x
  2. Step 2: Convert to fraction form
    999.22/1,498.91 = 340.83/x
  3. Step 3: Cross multiply
    999.22x = 1,498.91 × 340.83
  4. Step 4: Simplify right side
    999.22x = 510,874.60
  5. Step 5: Solve for x
    x = 510,874.60/999.22
  6. Step 6: Final answer
    x = 511.27

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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.