Home / 1,318.48-1,977.41-441.02

Finding the Fourth Proportional to 1,318.48, 1,977.41 and 441.02

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Solution

The fourth proportional to 1,318.48, 1,977.41 and 441.02 is: 661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.48 : 1,977.41 = 441.02 : x
  2. Step 2: Convert to fraction form
    1,318.48/1,977.41 = 441.02/x
  3. Step 3: Cross multiply
    1,318.48x = 1,977.41 × 441.02
  4. Step 4: Simplify right side
    1,318.48x = 872,083.40
  5. Step 5: Solve for x
    x = 872,083.40/1,318.48
  6. Step 6: Final answer
    x = 661.43

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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.