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Finding the Fourth Proportional to 1,094.82, 1,511.40 and 628.98

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Solution

The fourth proportional to 1,094.82, 1,511.40 and 628.98 is: 868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.82 : 1,511.40 = 628.98 : x
  2. Step 2: Convert to fraction form
    1,094.82/1,511.40 = 628.98/x
  3. Step 3: Cross multiply
    1,094.82x = 1,511.40 × 628.98
  4. Step 4: Simplify right side
    1,094.82x = 950,640.37
  5. Step 5: Solve for x
    x = 950,640.37/1,094.82
  6. Step 6: Final answer
    x = 868.31

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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.