Home / 1,022.16-1,410.12-629.40

Finding the Fourth Proportional to 1,022.16, 1,410.12 and 629.40

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Solution

The fourth proportional to 1,022.16, 1,410.12 and 629.40 is: 868.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.16 : 1,410.12 = 629.40 : x
  2. Step 2: Convert to fraction form
    1,022.16/1,410.12 = 629.40/x
  3. Step 3: Cross multiply
    1,022.16x = 1,410.12 × 629.40
  4. Step 4: Simplify right side
    1,022.16x = 887,529.53
  5. Step 5: Solve for x
    x = 887,529.53/1,022.16
  6. Step 6: Final answer
    x = 868.29

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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.