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Finding the Fourth Proportional to 2,229.95, 3,345.39 and 669.89

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Solution

The fourth proportional to 2,229.95, 3,345.39 and 669.89 is: 1,004.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.95 : 3,345.39 = 669.89 : x
  2. Step 2: Convert to fraction form
    2,229.95/3,345.39 = 669.89/x
  3. Step 3: Cross multiply
    2,229.95x = 3,345.39 × 669.89
  4. Step 4: Simplify right side
    2,229.95x = 2,241,043.31
  5. Step 5: Solve for x
    x = 2,241,043.31/2,229.95
  6. Step 6: Final answer
    x = 1,004.97

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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.