Home / 1,095.25-1,511.45-629.50

Finding the Fourth Proportional to 1,095.25, 1,511.45 and 629.50

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Solution

The fourth proportional to 1,095.25, 1,511.45 and 629.50 is: 868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.25 : 1,511.45 = 629.50 : x
  2. Step 2: Convert to fraction form
    1,095.25/1,511.45 = 629.50/x
  3. Step 3: Cross multiply
    1,095.25x = 1,511.45 × 629.50
  4. Step 4: Simplify right side
    1,095.25x = 951,457.78
  5. Step 5: Solve for x
    x = 951,457.78/1,095.25
  6. Step 6: Final answer
    x = 868.71

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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.