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Finding the Fourth Proportional to 1,769.70, 2,654.68 and 537.21

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Solution

The fourth proportional to 1,769.70, 2,654.68 and 537.21 is: 805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.70 : 2,654.68 = 537.21 : x
  2. Step 2: Convert to fraction form
    1,769.70/2,654.68 = 537.21/x
  3. Step 3: Cross multiply
    1,769.70x = 2,654.68 × 537.21
  4. Step 4: Simplify right side
    1,769.70x = 1,426,120.64
  5. Step 5: Solve for x
    x = 1,426,120.64/1,769.70
  6. Step 6: Final answer
    x = 805.85

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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.