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Finding the Fourth Proportional to 1,059.19, 1,589.82 and 573.28

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Solution

The fourth proportional to 1,059.19, 1,589.82 and 573.28 is: 860.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.19 : 1,589.82 = 573.28 : x
  2. Step 2: Convert to fraction form
    1,059.19/1,589.82 = 573.28/x
  3. Step 3: Cross multiply
    1,059.19x = 1,589.82 × 573.28
  4. Step 4: Simplify right side
    1,059.19x = 911,412.01
  5. Step 5: Solve for x
    x = 911,412.01/1,059.19
  6. Step 6: Final answer
    x = 860.48

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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.