Home / 1,072.01-1,479.40-629.82

Finding the Fourth Proportional to 1,072.01, 1,479.40 and 629.82

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Solution

The fourth proportional to 1,072.01, 1,479.40 and 629.82 is: 869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.01 : 1,479.40 = 629.82 : x
  2. Step 2: Convert to fraction form
    1,072.01/1,479.40 = 629.82/x
  3. Step 3: Cross multiply
    1,072.01x = 1,479.40 × 629.82
  4. Step 4: Simplify right side
    1,072.01x = 931,754.13
  5. Step 5: Solve for x
    x = 931,754.13/1,072.01
  6. Step 6: Final answer
    x = 869.17

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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.