Home / 1,014.21-1,520.49-320.44

Finding the Fourth Proportional to 1,014.21, 1,520.49 and 320.44

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Solution

The fourth proportional to 1,014.21, 1,520.49 and 320.44 is: 480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.21 : 1,520.49 = 320.44 : x
  2. Step 2: Convert to fraction form
    1,014.21/1,520.49 = 320.44/x
  3. Step 3: Cross multiply
    1,014.21x = 1,520.49 × 320.44
  4. Step 4: Simplify right side
    1,014.21x = 487,225.82
  5. Step 5: Solve for x
    x = 487,225.82/1,014.21
  6. Step 6: Final answer
    x = 480.40

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1.5x scale

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.