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Finding the Fourth Proportional to 1,069.92, 1,604.93 and 522.59

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Solution

The fourth proportional to 1,069.92, 1,604.93 and 522.59 is: 783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.92 : 1,604.93 = 522.59 : x
  2. Step 2: Convert to fraction form
    1,069.92/1,604.93 = 522.59/x
  3. Step 3: Cross multiply
    1,069.92x = 1,604.93 × 522.59
  4. Step 4: Simplify right side
    1,069.92x = 838,709.73
  5. Step 5: Solve for x
    x = 838,709.73/1,069.92
  6. Step 6: Final answer
    x = 783.90

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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.