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Finding the Fourth Proportional to 1,016.35, 1,524.44 and 285.96

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Solution

The fourth proportional to 1,016.35, 1,524.44 and 285.96 is: 428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.35 : 1,524.44 = 285.96 : x
  2. Step 2: Convert to fraction form
    1,016.35/1,524.44 = 285.96/x
  3. Step 3: Cross multiply
    1,016.35x = 1,524.44 × 285.96
  4. Step 4: Simplify right side
    1,016.35x = 435,919.81
  5. Step 5: Solve for x
    x = 435,919.81/1,016.35
  6. Step 6: Final answer
    x = 428.91

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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.