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Finding the Fourth Proportional to 1,228.69, 1,696.80 and 1,050.62

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Solution

The fourth proportional to 1,228.69, 1,696.80 and 1,050.62 is: 1,450.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.69 : 1,696.80 = 1,050.62 : x
  2. Step 2: Convert to fraction form
    1,228.69/1,696.80 = 1,050.62/x
  3. Step 3: Cross multiply
    1,228.69x = 1,696.80 × 1,050.62
  4. Step 4: Simplify right side
    1,228.69x = 1,782,692.02
  5. Step 5: Solve for x
    x = 1,782,692.02/1,228.69
  6. Step 6: Final answer
    x = 1,450.89

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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.