Home / 1,218.85-1,826.75-488.03

Finding the Fourth Proportional to 1,218.85, 1,826.75 and 488.03

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Solution

The fourth proportional to 1,218.85, 1,826.75 and 488.03 is: 731.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.85 : 1,826.75 = 488.03 : x
  2. Step 2: Convert to fraction form
    1,218.85/1,826.75 = 488.03/x
  3. Step 3: Cross multiply
    1,218.85x = 1,826.75 × 488.03
  4. Step 4: Simplify right side
    1,218.85x = 891,500.89
  5. Step 5: Solve for x
    x = 891,500.89/1,218.85
  6. Step 6: Final answer
    x = 731.43

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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.