Home / 1,071.35-1,478.46-629.26

Finding the Fourth Proportional to 1,071.35, 1,478.46 and 629.26

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Solution

The fourth proportional to 1,071.35, 1,478.46 and 629.26 is: 868.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.35 : 1,478.46 = 629.26 : x
  2. Step 2: Convert to fraction form
    1,071.35/1,478.46 = 629.26/x
  3. Step 3: Cross multiply
    1,071.35x = 1,478.46 × 629.26
  4. Step 4: Simplify right side
    1,071.35x = 930,334.40
  5. Step 5: Solve for x
    x = 930,334.40/1,071.35
  6. Step 6: Final answer
    x = 868.38

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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.