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Finding the Fourth Proportional to 680.97, 1,019.52 and 564.33

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Solution

The fourth proportional to 680.97, 1,019.52 and 564.33 is: 844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.97 : 1,019.52 = 564.33 : x
  2. Step 2: Convert to fraction form
    680.97/1,019.52 = 564.33/x
  3. Step 3: Cross multiply
    680.97x = 1,019.52 × 564.33
  4. Step 4: Simplify right side
    680.97x = 575,345.72
  5. Step 5: Solve for x
    x = 575,345.72/680.97
  6. Step 6: Final answer
    x = 844.89

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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.