Home / 1,317.32-1,975.98-343.43

Finding the Fourth Proportional to 1,317.32, 1,975.98 and 343.43

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Solution

The fourth proportional to 1,317.32, 1,975.98 and 343.43 is: 515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.32 : 1,975.98 = 343.43 : x
  2. Step 2: Convert to fraction form
    1,317.32/1,975.98 = 343.43/x
  3. Step 3: Cross multiply
    1,317.32x = 1,975.98 × 343.43
  4. Step 4: Simplify right side
    1,317.32x = 678,600.93
  5. Step 5: Solve for x
    x = 678,600.93/1,317.32
  6. Step 6: Final answer
    x = 515.14

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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.