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Finding the Fourth Proportional to 1,059.75, 1,588.55 and 443.79

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Solution

The fourth proportional to 1,059.75, 1,588.55 and 443.79 is: 665.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.75 : 1,588.55 = 443.79 : x
  2. Step 2: Convert to fraction form
    1,059.75/1,588.55 = 443.79/x
  3. Step 3: Cross multiply
    1,059.75x = 1,588.55 × 443.79
  4. Step 4: Simplify right side
    1,059.75x = 704,980.39
  5. Step 5: Solve for x
    x = 704,980.39/1,059.75
  6. Step 6: Final answer
    x = 665.23

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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.