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Finding the Fourth Proportional to 723.90, 1,084.33 and 569.09

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Solution

The fourth proportional to 723.90, 1,084.33 and 569.09 is: 852.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.90 : 1,084.33 = 569.09 : x
  2. Step 2: Convert to fraction form
    723.90/1,084.33 = 569.09/x
  3. Step 3: Cross multiply
    723.90x = 1,084.33 × 569.09
  4. Step 4: Simplify right side
    723.90x = 617,082.65
  5. Step 5: Solve for x
    x = 617,082.65/723.90
  6. Step 6: Final answer
    x = 852.44

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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.