Home / 1,317.10-1,975.62-343.18

Finding the Fourth Proportional to 1,317.10, 1,975.62 and 343.18

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Solution

The fourth proportional to 1,317.10, 1,975.62 and 343.18 is: 514.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.10 : 1,975.62 = 343.18 : x
  2. Step 2: Convert to fraction form
    1,317.10/1,975.62 = 343.18/x
  3. Step 3: Cross multiply
    1,317.10x = 1,975.62 × 343.18
  4. Step 4: Simplify right side
    1,317.10x = 677,993.27
  5. Step 5: Solve for x
    x = 677,993.27/1,317.10
  6. Step 6: Final answer
    x = 514.76

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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.