Home / 1,318.21-1,977.30-344.27

Finding the Fourth Proportional to 1,318.21, 1,977.30 and 344.27

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Solution

The fourth proportional to 1,318.21, 1,977.30 and 344.27 is: 516.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.21 : 1,977.30 = 344.27 : x
  2. Step 2: Convert to fraction form
    1,318.21/1,977.30 = 344.27/x
  3. Step 3: Cross multiply
    1,318.21x = 1,977.30 × 344.27
  4. Step 4: Simplify right side
    1,318.21x = 680,730.01
  5. Step 5: Solve for x
    x = 680,730.01/1,318.21
  6. Step 6: Final answer
    x = 516.41

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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.