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Finding the Fourth Proportional to 1,672.69, 2,307.84 and 1,200.44

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Solution

The fourth proportional to 1,672.69, 2,307.84 and 1,200.44 is: 1,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.69 : 2,307.84 = 1,200.44 : x
  2. Step 2: Convert to fraction form
    1,672.69/2,307.84 = 1,200.44/x
  3. Step 3: Cross multiply
    1,672.69x = 2,307.84 × 1,200.44
  4. Step 4: Simplify right side
    1,672.69x = 2,770,423.45
  5. Step 5: Solve for x
    x = 2,770,423.45/1,672.69
  6. Step 6: Final answer
    x = 1,656.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.