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Finding the Fourth Proportional to 2,223.90, 3,335.15 and 663.62

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Solution

The fourth proportional to 2,223.90, 3,335.15 and 663.62 is: 995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.90 : 3,335.15 = 663.62 : x
  2. Step 2: Convert to fraction form
    2,223.90/3,335.15 = 663.62/x
  3. Step 3: Cross multiply
    2,223.90x = 3,335.15 × 663.62
  4. Step 4: Simplify right side
    2,223.90x = 2,213,252.25
  5. Step 5: Solve for x
    x = 2,213,252.25/2,223.90
  6. Step 6: Final answer
    x = 995.21

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1.5x scale

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.