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Finding the Fourth Proportional to 1,785.48, 2,676.94 and 674.72

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Solution

The fourth proportional to 1,785.48, 2,676.94 and 674.72 is: 1,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.48 : 2,676.94 = 674.72 : x
  2. Step 2: Convert to fraction form
    1,785.48/2,676.94 = 674.72/x
  3. Step 3: Cross multiply
    1,785.48x = 2,676.94 × 674.72
  4. Step 4: Simplify right side
    1,785.48x = 1,806,184.96
  5. Step 5: Solve for x
    x = 1,806,184.96/1,785.48
  6. Step 6: Final answer
    x = 1,011.60

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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.