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Finding the Fourth Proportional to 1,337.39, 2,006.07 and 412.70

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Solution

The fourth proportional to 1,337.39, 2,006.07 and 412.70 is: 619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.39 : 2,006.07 = 412.70 : x
  2. Step 2: Convert to fraction form
    1,337.39/2,006.07 = 412.70/x
  3. Step 3: Cross multiply
    1,337.39x = 2,006.07 × 412.70
  4. Step 4: Simplify right side
    1,337.39x = 827,895.06
  5. Step 5: Solve for x
    x = 827,895.06/1,337.39
  6. Step 6: Final answer
    x = 619.04

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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.