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Finding the Fourth Proportional to 1,016.67, 1,524.65 and 439.23

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Solution

The fourth proportional to 1,016.67, 1,524.65 and 439.23 is: 658.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.67 : 1,524.65 = 439.23 : x
  2. Step 2: Convert to fraction form
    1,016.67/1,524.65 = 439.23/x
  3. Step 3: Cross multiply
    1,016.67x = 1,524.65 × 439.23
  4. Step 4: Simplify right side
    1,016.67x = 669,669.82
  5. Step 5: Solve for x
    x = 669,669.82/1,016.67
  6. Step 6: Final answer
    x = 658.69

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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.