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Finding the Fourth Proportional to 1,800.38, 2,700.07 and 629.75

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Solution

The fourth proportional to 1,800.38, 2,700.07 and 629.75 is: 944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.38 : 2,700.07 = 629.75 : x
  2. Step 2: Convert to fraction form
    1,800.38/2,700.07 = 629.75/x
  3. Step 3: Cross multiply
    1,800.38x = 2,700.07 × 629.75
  4. Step 4: Simplify right side
    1,800.38x = 1,700,369.08
  5. Step 5: Solve for x
    x = 1,700,369.08/1,800.38
  6. Step 6: Final answer
    x = 944.45

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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.