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Finding the Fourth Proportional to 999.69, 1,508.25 and 996.99

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Solution

The fourth proportional to 999.69, 1,508.25 and 996.99 is: 1,504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.69 : 1,508.25 = 996.99 : x
  2. Step 2: Convert to fraction form
    999.69/1,508.25 = 996.99/x
  3. Step 3: Cross multiply
    999.69x = 1,508.25 × 996.99
  4. Step 4: Simplify right side
    999.69x = 1,503,710.17
  5. Step 5: Solve for x
    x = 1,503,710.17/999.69
  6. Step 6: Final answer
    x = 1,504.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.