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Finding the Fourth Proportional to 967.46, 1,451.21 and 480.51

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Solution

The fourth proportional to 967.46, 1,451.21 and 480.51 is: 720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.46 : 1,451.21 = 480.51 : x
  2. Step 2: Convert to fraction form
    967.46/1,451.21 = 480.51/x
  3. Step 3: Cross multiply
    967.46x = 1,451.21 × 480.51
  4. Step 4: Simplify right side
    967.46x = 697,318.51
  5. Step 5: Solve for x
    x = 697,318.51/967.46
  6. Step 6: Final answer
    x = 720.78

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Double scale
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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.