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Finding the Fourth Proportional to 1,021.73, 1,532.56 and 559.73

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Solution

The fourth proportional to 1,021.73, 1,532.56 and 559.73 is: 839.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.73 : 1,532.56 = 559.73 : x
  2. Step 2: Convert to fraction form
    1,021.73/1,532.56 = 559.73/x
  3. Step 3: Cross multiply
    1,021.73x = 1,532.56 × 559.73
  4. Step 4: Simplify right side
    1,021.73x = 857,819.81
  5. Step 5: Solve for x
    x = 857,819.81/1,021.73
  6. Step 6: Final answer
    x = 839.58

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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.