Home / 1,016.20-1,402.35-550.45

Finding the Fourth Proportional to 1,016.20, 1,402.35 and 550.45

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Solution

The fourth proportional to 1,016.20, 1,402.35 and 550.45 is: 759.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.20 : 1,402.35 = 550.45 : x
  2. Step 2: Convert to fraction form
    1,016.20/1,402.35 = 550.45/x
  3. Step 3: Cross multiply
    1,016.20x = 1,402.35 × 550.45
  4. Step 4: Simplify right side
    1,016.20x = 771,923.56
  5. Step 5: Solve for x
    x = 771,923.56/1,016.20
  6. Step 6: Final answer
    x = 759.62

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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.