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Finding the Fourth Proportional to 1,344.60, 2,016.30 and 614.40

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Solution

The fourth proportional to 1,344.60, 2,016.30 and 614.40 is: 921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.60 : 2,016.30 = 614.40 : x
  2. Step 2: Convert to fraction form
    1,344.60/2,016.30 = 614.40/x
  3. Step 3: Cross multiply
    1,344.60x = 2,016.30 × 614.40
  4. Step 4: Simplify right side
    1,344.60x = 1,238,814.72
  5. Step 5: Solve for x
    x = 1,238,814.72/1,344.60
  6. Step 6: Final answer
    x = 921.33

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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.