Home / 1,077.38-1,486.75-629.35

Finding the Fourth Proportional to 1,077.38, 1,486.75 and 629.35

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Solution

The fourth proportional to 1,077.38, 1,486.75 and 629.35 is: 868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.38 : 1,486.75 = 629.35 : x
  2. Step 2: Convert to fraction form
    1,077.38/1,486.75 = 629.35/x
  3. Step 3: Cross multiply
    1,077.38x = 1,486.75 × 629.35
  4. Step 4: Simplify right side
    1,077.38x = 935,686.11
  5. Step 5: Solve for x
    x = 935,686.11/1,077.38
  6. Step 6: Final answer
    x = 868.48

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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.