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Finding the Fourth Proportional to 1,016.67, 1,525.73 and 439.59

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Solution

The fourth proportional to 1,016.67, 1,525.73 and 439.59 is: 659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.67 : 1,525.73 = 439.59 : x
  2. Step 2: Convert to fraction form
    1,016.67/1,525.73 = 439.59/x
  3. Step 3: Cross multiply
    1,016.67x = 1,525.73 × 439.59
  4. Step 4: Simplify right side
    1,016.67x = 670,693.45
  5. Step 5: Solve for x
    x = 670,693.45/1,016.67
  6. Step 6: Final answer
    x = 659.70

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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.