Home / 1,048.80-1,447.26-629.08

Finding the Fourth Proportional to 1,048.80, 1,447.26 and 629.08

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Solution

The fourth proportional to 1,048.80, 1,447.26 and 629.08 is: 868.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.80 : 1,447.26 = 629.08 : x
  2. Step 2: Convert to fraction form
    1,048.80/1,447.26 = 629.08/x
  3. Step 3: Cross multiply
    1,048.80x = 1,447.26 × 629.08
  4. Step 4: Simplify right side
    1,048.80x = 910,442.32
  5. Step 5: Solve for x
    x = 910,442.32/1,048.80
  6. Step 6: Final answer
    x = 868.08

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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.