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Finding the Fourth Proportional to 1,338.50, 2,007.72 and 364.70

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Solution

The fourth proportional to 1,338.50, 2,007.72 and 364.70 is: 547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.50 : 2,007.72 = 364.70 : x
  2. Step 2: Convert to fraction form
    1,338.50/2,007.72 = 364.70/x
  3. Step 3: Cross multiply
    1,338.50x = 2,007.72 × 364.70
  4. Step 4: Simplify right side
    1,338.50x = 732,205.45
  5. Step 5: Solve for x
    x = 732,205.45/1,338.50
  6. Step 6: Final answer
    x = 547.04

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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.