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Finding the Fourth Proportional to 1,446.90, 2,170.56 and 614.02

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Solution

The fourth proportional to 1,446.90, 2,170.56 and 614.02 is: 921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.90 : 2,170.56 = 614.02 : x
  2. Step 2: Convert to fraction form
    1,446.90/2,170.56 = 614.02/x
  3. Step 3: Cross multiply
    1,446.90x = 2,170.56 × 614.02
  4. Step 4: Simplify right side
    1,446.90x = 1,332,767.25
  5. Step 5: Solve for x
    x = 1,332,767.25/1,446.90
  6. Step 6: Final answer
    x = 921.12

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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.