Home / 1,022.07-1,410.98-629.32

Finding the Fourth Proportional to 1,022.07, 1,410.98 and 629.32

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Solution

The fourth proportional to 1,022.07, 1,410.98 and 629.32 is: 868.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.07 : 1,410.98 = 629.32 : x
  2. Step 2: Convert to fraction form
    1,022.07/1,410.98 = 629.32/x
  3. Step 3: Cross multiply
    1,022.07x = 1,410.98 × 629.32
  4. Step 4: Simplify right side
    1,022.07x = 887,957.93
  5. Step 5: Solve for x
    x = 887,957.93/1,022.07
  6. Step 6: Final answer
    x = 868.78

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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.