Home / 1,014.35-1,521.38-320.85

Finding the Fourth Proportional to 1,014.35, 1,521.38 and 320.85

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Solution

The fourth proportional to 1,014.35, 1,521.38 and 320.85 is: 481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.35 : 1,521.38 = 320.85 : x
  2. Step 2: Convert to fraction form
    1,014.35/1,521.38 = 320.85/x
  3. Step 3: Cross multiply
    1,014.35x = 1,521.38 × 320.85
  4. Step 4: Simplify right side
    1,014.35x = 488,133.17
  5. Step 5: Solve for x
    x = 488,133.17/1,014.35
  6. Step 6: Final answer
    x = 481.23

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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.