Home / 1,318.25-1,977.38-344.34

Finding the Fourth Proportional to 1,318.25, 1,977.38 and 344.34

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Solution

The fourth proportional to 1,318.25, 1,977.38 and 344.34 is: 516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.25 : 1,977.38 = 344.34 : x
  2. Step 2: Convert to fraction form
    1,318.25/1,977.38 = 344.34/x
  3. Step 3: Cross multiply
    1,318.25x = 1,977.38 × 344.34
  4. Step 4: Simplify right side
    1,318.25x = 680,889.31
  5. Step 5: Solve for x
    x = 680,889.31/1,318.25
  6. Step 6: Final answer
    x = 516.51

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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.