Home / 1,087.26-1,629.96-471.42

Finding the Fourth Proportional to 1,087.26, 1,629.96 and 471.42

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Solution

The fourth proportional to 1,087.26, 1,629.96 and 471.42 is: 706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.26 : 1,629.96 = 471.42 : x
  2. Step 2: Convert to fraction form
    1,087.26/1,629.96 = 471.42/x
  3. Step 3: Cross multiply
    1,087.26x = 1,629.96 × 471.42
  4. Step 4: Simplify right side
    1,087.26x = 768,395.74
  5. Step 5: Solve for x
    x = 768,395.74/1,087.26
  6. Step 6: Final answer
    x = 706.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.