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Finding the Fourth Proportional to 1,169.02, 1,753.99 and 438.43

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Solution

The fourth proportional to 1,169.02, 1,753.99 and 438.43 is: 657.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.02 : 1,753.99 = 438.43 : x
  2. Step 2: Convert to fraction form
    1,169.02/1,753.99 = 438.43/x
  3. Step 3: Cross multiply
    1,169.02x = 1,753.99 × 438.43
  4. Step 4: Simplify right side
    1,169.02x = 769,001.84
  5. Step 5: Solve for x
    x = 769,001.84/1,169.02
  6. Step 6: Final answer
    x = 657.82

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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.