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Finding the Fourth Proportional to 1,033.53, 1,425.87 and 591.20

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Solution

The fourth proportional to 1,033.53, 1,425.87 and 591.20 is: 815.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.53 : 1,425.87 = 591.20 : x
  2. Step 2: Convert to fraction form
    1,033.53/1,425.87 = 591.20/x
  3. Step 3: Cross multiply
    1,033.53x = 1,425.87 × 591.20
  4. Step 4: Simplify right side
    1,033.53x = 842,965.00
  5. Step 5: Solve for x
    x = 842,965.00/1,033.53
  6. Step 6: Final answer
    x = 815.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.