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Finding the Fourth Proportional to 1,446.38, 2,169.57 and 715.22

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Solution

The fourth proportional to 1,446.38, 2,169.57 and 715.22 is: 1,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.38 : 2,169.57 = 715.22 : x
  2. Step 2: Convert to fraction form
    1,446.38/2,169.57 = 715.22/x
  3. Step 3: Cross multiply
    1,446.38x = 2,169.57 × 715.22
  4. Step 4: Simplify right side
    1,446.38x = 1,551,719.86
  5. Step 5: Solve for x
    x = 1,551,719.86/1,446.38
  6. Step 6: Final answer
    x = 1,072.83

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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.