Home / 1,071.34-1,478.66-629.25

Finding the Fourth Proportional to 1,071.34, 1,478.66 and 629.25

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Solution

The fourth proportional to 1,071.34, 1,478.66 and 629.25 is: 868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.34 : 1,478.66 = 629.25 : x
  2. Step 2: Convert to fraction form
    1,071.34/1,478.66 = 629.25/x
  3. Step 3: Cross multiply
    1,071.34x = 1,478.66 × 629.25
  4. Step 4: Simplify right side
    1,071.34x = 930,446.81
  5. Step 5: Solve for x
    x = 930,446.81/1,071.34
  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.