Home / 1,071.44-1,478.61-629.33

Finding the Fourth Proportional to 1,071.44, 1,478.61 and 629.33

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Solution

The fourth proportional to 1,071.44, 1,478.61 and 629.33 is: 868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.44 : 1,478.61 = 629.33 : x
  2. Step 2: Convert to fraction form
    1,071.44/1,478.61 = 629.33/x
  3. Step 3: Cross multiply
    1,071.44x = 1,478.61 × 629.33
  4. Step 4: Simplify right side
    1,071.44x = 930,533.63
  5. Step 5: Solve for x
    x = 930,533.63/1,071.44
  6. Step 6: Final answer
    x = 868.49

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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.