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Finding the Fourth Proportional to 1,669.38, 2,502.90 and 744.42

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Solution

The fourth proportional to 1,669.38, 2,502.90 and 744.42 is: 1,116.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.38 : 2,502.90 = 744.42 : x
  2. Step 2: Convert to fraction form
    1,669.38/2,502.90 = 744.42/x
  3. Step 3: Cross multiply
    1,669.38x = 2,502.90 × 744.42
  4. Step 4: Simplify right side
    1,669.38x = 1,863,208.82
  5. Step 5: Solve for x
    x = 1,863,208.82/1,669.38
  6. Step 6: Final answer
    x = 1,116.11

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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.