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Finding the Fourth Proportional to 2,223.91, 3,336.40 and 663.85

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Solution

The fourth proportional to 2,223.91, 3,336.40 and 663.85 is: 995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.91 : 3,336.40 = 663.85 : x
  2. Step 2: Convert to fraction form
    2,223.91/3,336.40 = 663.85/x
  3. Step 3: Cross multiply
    2,223.91x = 3,336.40 × 663.85
  4. Step 4: Simplify right side
    2,223.91x = 2,214,852.46
  5. Step 5: Solve for x
    x = 2,214,852.46/2,223.91
  6. Step 6: Final answer
    x = 995.93

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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.