Home / 1,318.85-1,977.61-441.05

Finding the Fourth Proportional to 1,318.85, 1,977.61 and 441.05

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Solution

The fourth proportional to 1,318.85, 1,977.61 and 441.05 is: 661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.85 : 1,977.61 = 441.05 : x
  2. Step 2: Convert to fraction form
    1,318.85/1,977.61 = 441.05/x
  3. Step 3: Cross multiply
    1,318.85x = 1,977.61 × 441.05
  4. Step 4: Simplify right side
    1,318.85x = 872,213.90
  5. Step 5: Solve for x
    x = 872,213.90/1,318.85
  6. Step 6: Final answer
    x = 661.35

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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.