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Finding the Fourth Proportional to 1,344.46, 2,017 and 419.97

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Solution

The fourth proportional to 1,344.46, 2,017 and 419.97 is: 630.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.46 : 2,017 = 419.97 : x
  2. Step 2: Convert to fraction form
    1,344.46/2,017 = 419.97/x
  3. Step 3: Cross multiply
    1,344.46x = 2,017 × 419.97
  4. Step 4: Simplify right side
    1,344.46x = 847,079.49
  5. Step 5: Solve for x
    x = 847,079.49/1,344.46
  6. Step 6: Final answer
    x = 630.05

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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.