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Finding the Fourth Proportional to 1,674.78, 2,512.80 and 700.38

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Solution

The fourth proportional to 1,674.78, 2,512.80 and 700.38 is: 1,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.78 : 2,512.80 = 700.38 : x
  2. Step 2: Convert to fraction form
    1,674.78/2,512.80 = 700.38/x
  3. Step 3: Cross multiply
    1,674.78x = 2,512.80 × 700.38
  4. Step 4: Simplify right side
    1,674.78x = 1,759,914.86
  5. Step 5: Solve for x
    x = 1,759,914.86/1,674.78
  6. Step 6: Final answer
    x = 1,050.83

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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.