Home / 1,319.10-1,977.97-441.28

Finding the Fourth Proportional to 1,319.10, 1,977.97 and 441.28

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Solution

The fourth proportional to 1,319.10, 1,977.97 and 441.28 is: 661.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.10 : 1,977.97 = 441.28 : x
  2. Step 2: Convert to fraction form
    1,319.10/1,977.97 = 441.28/x
  3. Step 3: Cross multiply
    1,319.10x = 1,977.97 × 441.28
  4. Step 4: Simplify right side
    1,319.10x = 872,838.60
  5. Step 5: Solve for x
    x = 872,838.60/1,319.10
  6. Step 6: Final answer
    x = 661.69

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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.