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Finding the Fourth Proportional to 1,769.77, 2,655.26 and 674.45

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Solution

The fourth proportional to 1,769.77, 2,655.26 and 674.45 is: 1,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.77 : 2,655.26 = 674.45 : x
  2. Step 2: Convert to fraction form
    1,769.77/2,655.26 = 674.45/x
  3. Step 3: Cross multiply
    1,769.77x = 2,655.26 × 674.45
  4. Step 4: Simplify right side
    1,769.77x = 1,790,840.11
  5. Step 5: Solve for x
    x = 1,790,840.11/1,769.77
  6. Step 6: Final answer
    x = 1,011.91

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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.