Home / 1,153.31-1,591.58-629.35

Finding the Fourth Proportional to 1,153.31, 1,591.58 and 629.35

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Solution

The fourth proportional to 1,153.31, 1,591.58 and 629.35 is: 868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.31 : 1,591.58 = 629.35 : x
  2. Step 2: Convert to fraction form
    1,153.31/1,591.58 = 629.35/x
  3. Step 3: Cross multiply
    1,153.31x = 1,591.58 × 629.35
  4. Step 4: Simplify right side
    1,153.31x = 1,001,660.87
  5. Step 5: Solve for x
    x = 1,001,660.87/1,153.31
  6. Step 6: Final answer
    x = 868.51

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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.