Home / 1,318.59-1,977.99-344.69

Finding the Fourth Proportional to 1,318.59, 1,977.99 and 344.69

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Solution

The fourth proportional to 1,318.59, 1,977.99 and 344.69 is: 517.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.59 : 1,977.99 = 344.69 : x
  2. Step 2: Convert to fraction form
    1,318.59/1,977.99 = 344.69/x
  3. Step 3: Cross multiply
    1,318.59x = 1,977.99 × 344.69
  4. Step 4: Simplify right side
    1,318.59x = 681,789.72
  5. Step 5: Solve for x
    x = 681,789.72/1,318.59
  6. Step 6: Final answer
    x = 517.06

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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.