Home / 1,157.27-1,734.82-426.65

Finding the Fourth Proportional to 1,157.27, 1,734.82 and 426.65

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Solution

The fourth proportional to 1,157.27, 1,734.82 and 426.65 is: 639.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.27 : 1,734.82 = 426.65 : x
  2. Step 2: Convert to fraction form
    1,157.27/1,734.82 = 426.65/x
  3. Step 3: Cross multiply
    1,157.27x = 1,734.82 × 426.65
  4. Step 4: Simplify right side
    1,157.27x = 740,151.21
  5. Step 5: Solve for x
    x = 740,151.21/1,157.27
  6. Step 6: Final answer
    x = 639.57

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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.