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Finding the Fourth Proportional to 1,784.15, 2,675.75 and 629.75

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Solution

The fourth proportional to 1,784.15, 2,675.75 and 629.75 is: 944.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.15 : 2,675.75 = 629.75 : x
  2. Step 2: Convert to fraction form
    1,784.15/2,675.75 = 629.75/x
  3. Step 3: Cross multiply
    1,784.15x = 2,675.75 × 629.75
  4. Step 4: Simplify right side
    1,784.15x = 1,685,050.41
  5. Step 5: Solve for x
    x = 1,685,050.41/1,784.15
  6. Step 6: Final answer
    x = 944.46

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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.